Time. Getting fitted out with all that gear is going to take time, expect to take twenty minutes to an hour. If the place looks like Sydney Fish Market before Christmas then you need to be resigned to the fact that this could take a while, but be rest assured the the staff will attend to you as soon as possible. One way to avoid this is to come outside of the school holiday period. Another is to come in the early morning or mid afternoon as these are the quieter times in the hire shops.
We let you pick up your gear for the next day on that afternoon. It does not cost any more and is a far more relaxed atmosphere when it feels like you're not missing out on valuable skiing time.