Fall Trip with friends need help !!!!! (Bangkok)

Dear all friends in Thailand,

Me and 2 girl friends are planing to have a trip to Bangkok around Protected content . And we have no idea where we should go, eat, chill around the city.
I did go to Thailand last year and visit all the famous landscape of Bangkok.
So we just want to have fun kind of dancing in club/bar, enjoy Thai's food, make new friends. Also want to go to Pataya and Chiang Mai but we just have 5 days and I worry it isn't enough time to go.

Please give me some advises and if you guy have time, feel free to contact me via my personal email : Protected content