Usually i go to the beach. (Laem Sing or Kata most. Patong to crowded IMO).
Sometimes i just like to make a long ride with the motobike and a nice tg around the island. Stop at a temple, shopping in Phuket town and at sunset at Laem Phom Thep or so....
If the drinking was too much for me than sleep and later in the afternoon go to get a massage....
Sometimes in the late afternoon go to a sauna like Nerng Thong or the other in Soi Nanai (forget the name).
Or just go out early and sit in a bar watch the people going bye.....
Ahhh, that would be good now in patong.......
Hugo