Around the camps you can reach beaches and islands, temples and markets, and stadium fights, or simply eat well and get a massage. Phuket leans beaches and islands; Chiang Mai leans temples, markets, and mountains.
Seeing a fight is part of the trip. Bangkok has the big stadiums, Rajadamnern and Lumpinee, and most training areas have local shows. Check the current schedule and tickets before you go.
A rest day is for recovery. Thai massage is cheap and everywhere, and many camps have ice baths. A slow morning at a cafe does more for your training than another hard session.
Pick a destination and we will build training and rest days around it.