Sure, here are 50 tips and hacks for travelers going to South Korea from India, with keywords for SEO included:

1. Travel Documents: Ensure you have your valid passport, visa, and other necessary documents ready.
2. Currency Exchange: Convert INR to KRW (South Korean Won) before departure or upon arrival at the airport for better rates.
3. Travel Insurance: Purchase comprehensive travel insurance to cover medical emergencies, trip cancellations, and other unforeseen events.
4. Language Apps: Download language apps like Duolingo or Google Translate to communicate with locals.
5. Weather Preparation: Check South Korea's weather forecast and pack accordingly, including layers for sudden temperature changes.
6. Local SIM Card: Purchase a local SIM card upon arrival for affordable data and communication during your stay.
7. Transportation Cards: Get a T-money card for convenient use on buses, subways, and taxis.
8. Google Maps: Download offline maps on Google Maps for navigation without internet access.
9. Emergency Numbers: Note down emergency numbers like 119 (fire and ambulance) and 112 (police) for quick assistance.
10. Adapter Plug: Bring a universal adapter plug to charge your electronic devices.
11. Travel Apps: Install Korean travel apps like Visit Korea for tourist information, maps, and local recommendations.
12. Medication: Pack essential medications and a first aid kit, including prescriptions if needed.
13. Local Cuisine: Try Korean cuisine like bibimbap, kimchi, and bulgogi for an authentic food experience.
14. Street Food: Explore street food markets like Myeongdong in Seoul for delicious snacks and unique dishes.
15. Cultural Etiquette: Learn about Korean customs like bowing, removing shoes indoors, and using both hands when receiving items.
16. Korean Phrases: Learn basic Korean phrases like "hello" (annyeonghaseyo) and "thank you" (gamsahamnida) for polite interactions.
17. Public Restrooms: Carry tissue packs as some public restrooms may not provide them.
18. Hydration: Stay hydrated, especially during hot summers, by carrying a refillable water bottle.
19. Safety Tips: Be cautious of pickpockets in crowded areas and keep your belongings secure.
20. Tourist Discounts: Use your passport for discounts at tourist attractions, museums, and shops.
21. Hotel Booking: Book accommodations in advance, especially during peak seasons, for better rates and availability.
22. Shopping Tips: Explore shopping districts like Gangnam in Seoul for trendy fashion, cosmetics, and electronics.
23. Cultural Sites: Visit UNESCO World Heritage sites like Changdeokgung Palace and Bulguksa Temple for historical insights.
24. Transportation Apps: Use apps like KakaoMap or Naver Map for real-time public transportation schedules and routes.
25. Traditional Hanbok: Experience wearing a traditional Hanbok and take memorable photos at palaces or rental shops.
26. Local Markets: Visit Namdaemun Market or Gwangjang Market for affordable souvenirs, textiles, and street food.
27. Nature Escapes: Explore natural wonders like Jeju Island, Nami Island, and Seoraksan National Park for scenic beauty.
28. DMZ Tour: Consider joining a DMZ (Demilitarized Zone) tour for a glimpse into the Korean Peninsula's history.
29. Tea Culture: Experience Korean tea ceremonies and taste traditional teas like green tea and barley tea.
30. Spa Culture: Relax at Korean spas (jjimjilbang) offering saunas, hot baths, and massage services.
31. Public Transit Etiquette: Offer your seat to elderly or pregnant passengers on buses and subways as a gesture of respect.
32. Cultural Performances: Attend traditional performances like Nanta (cooking show) or B-boy dance shows for entertainment.
33. K-Pop Culture: Explore K-pop culture through themed cafes, concerts, and entertainment districts like Hongdae.
34. Photography Restrictions: Respect photography restrictions at certain cultural sites or museums.
35. Seasonal Festivals: Check for seasonal festivals like cherry blossom festivals in spring or lantern festivals in autumn.
36. Travel Apps: Install local transportation apps like Seoul Subway or Busan Metro for easy navigation.
37. Safety Escorts: Use late-night safety escorts available in major cities for added security when traveling alone.
38. Customs Regulations: Familiarize yourself with customs regulations to avoid any issues at customs checkpoints.
39. Internet Access: Enjoy free Wi-Fi at cafes, hotels, and public areas for staying connected.
40. Nightlife: Experience Korean nightlife in areas like Itaewon or Hongdae with bars, clubs, and live music venues.
41. Local Beverages: Taste traditional drinks like soju, makgeolli, and sikhye for a cultural experience.
42. Renting Bicycles: Rent bicycles to explore cities like Seoul or Busan at a leisurely pace.
43. Tourist Information Centers: Visit tourist information centers for maps, brochures, and assistance in multiple languages.
44. Shopping Hours: Note that shops often stay open late, especially in urban areas like Seoul.
45. Korean History: Learn about Korea's history, including the Joseon Dynasty and modern developments.
46. Cash vs. Cards: Carry a mix of cash and cards, as some smaller establishments may prefer cash payments.
47. Tax Refunds: Shop at tax refund eligible stores and claim VAT refunds at the airport before departure.
48. Pet Cafes: Visit pet cafes in Seoul where you can interact with cats, dogs, and other animals.
49. Document Scans: Keep digital copies of important documents like your passport, visa, and travel insurance for emergencies.
50. Local Events: Check local event calendars for cultural performances, exhibitions, and festivals during your visit.

These tips cover a wide range of aspects, from practical preparations like documents and transportation to cultural experiences, safety precautions, and local insights.