How long do you typically book for and why ?

Minimum 1 hour for first time WLs MLs , can always cut shorter if not appealing or no connection , poor service etc .. 90 minutes or 2 hours if satisfying service , good chemistry after the first time if seeing again , and lately overnighters if great chemistry after a few regular visits .. even 2 hours goes quick and not all sex

First time: 30 min always.
Coming back: usually 30 min still, maybe 45 if I know it's a good massage lady.

I've done the error and bought an hour of massage a few times and then 5 mins into it you realise that the lady can't massage for shit, and you're stuck there for a long time. If the massage is good, I'll come back anyway.