When to play

I was just wondering when do you start to play in an AMP? Often times I find myself not playing letting them do the massage, even ignoring it while the girl is massaging my back and their legs/thighs are on my fingertips. I'll just wait til the flip because of the chance of upsetting them. . Sometimes I just want to start off laying up stroking when they enter the room or grab a bootyful and a lil spank. So what about yall? Lol

Just depends
But the anticipation is awsome!