Advice regarding planning trip to Thailand

During 2025 I will attend the F1 race in Singapore and plan to spend 6-8 days in Bangkok and Pattaya on my way back to Texas. I would appreciate any tips/advice regarding soapy massage and if the freelancers will actually provide services to a fairly fit 66 year old guy. If so what are the current bar fines and tip for services rates? My trip is not until October 2025, and am hoping that the experienced people on this site can give me some advice to help make it memorable