Since Thailand is tropical place. It can get hot and humid in day and for those of you who don't like beach in noon then you can spend a day exploring the amazing view points of the city.
Some of the recommended ones are:
Windmill view point
Black Rock view point
These view points will leave you mesmerized.
After view points, get back to hotel to dress in your best party wear and head to Pattong Bangla street.
Quick tip: The nightlife keeps on getting happening as night progresses so head there post 11pm.
I would suggest going to illusion nightclub after 12am for they have best music and performance and entry is free. You can also shop lot of designer dupes at Bangla night market.
If you get tired of walking then must try Thai message from one of many Thai parlours along the street.