I think I have only had 1 or 2 max, 30 min bookings. The vast majority being 1 hour but I have done much much longer sessions which have been great fun too . IMO, on the long bookings you can really relax, drink a few bottles of wine- the booking can take on another dimension completely and you cango to another level ! And god forbid you might get to know the lady a bit, although conversation is becoming a bit of a dirty word around here !