Arrive a few minutes early, the girl will usually let you in.
When you enter, the girls will be behind the door, just head for the shower and you can chat while getting undressed.
Don't bother accepting water or a drink....wasting time!
Practice undressing quickly, (wear slip-on shoes, no tie, maybe a pull-over rather than shirt with buttons, go commando, all these save vital seconds!!)
Practice showering quickly and drying yourself quickly...if you're already showered, then just barely wet yourself and wash your mickey. Don't worry about drying too much, the sheets will dry you anyway.
The meeting usually ends when you cum, so don't get to carried away. If you feel you are about to cum, just picture your granny or someone.
Set an alarm on your watch to alert you when there is 5 minutes left.....then go for it.
Viola....you're welcome!