At airport don't miss to see the jewel of changi , it is open for all , no entry ticket .
This was a really amazing trip , beautiful mordern city which is a good balance of nature and mordern architecture.
For vegetarians the food is expensive as you can't have local street food . Do proper food reaserch if you are big on food , otherwise subway is everywhere so you will survive.
Do carry umbrella and eat lot of ice cream because they have the best icecream .
5 days were enough , we covered everything almost on foot and mrt . Went back to airport also with MRT which was convenient and cheap.