THINGS TO KEEP IN MIND
1. Winding roads and steep altitudes can cause motion sickness. If you are prone to getting sick when on road, it is advisable to carry your medication and pop it as precaution.
2. Vegetarian food is a little problem in some parts of the state.
3. Make sure you carry some passport size photos, that you may require for permits.
4. The oxygen tends to dip in a lot of areas in the North. So if you have been suffering from breathlessness or asthama, it is better to consult your doctor and carry any precautionary medication.
5. The activities and itineraries here are a lot dependent on the weather forecast. Make sure you check it before planning the trip and also during the trip.
6. Cabs are going to be expensive. So make sure to plan in away that no trip is just a commute. Like for example, instead of going to your hotel directly after leaving a destination, you could club in a few sightseeing spots on the way, you would be charged the same.
Bagdogra is the nearest airport to get to Sikkim. Book a morning flight, so that it is still sunny when you land in Bagdogra and also to account for any flight delays that usually occur here because of bad weather. Have a quick meal and if you are a vegetarian, it is better to carry some food along, as it was a task for us to find Vegetarian food till we reached Gangtok. It is better to not believe the maps for this trip, as no matter what time it shows, it would take about 5 hours to get to Gangtok owing to the winding roads, unpredictable weather and landslide road closures. It took us nearly 8 hours to get there after landing, due to road closure because of landslides.
Reach the Hotel and relax. Make sure the hotels you book, provide heaters in your rooms. We stayed at Kingsway Boutique Hotel. It is a good hotel overlooking the valley on one side and the road on the other. It is also one of the few hotels that have an elevator.