[Plugin: Booking Calendar] instant booking without mail?

Hi i’m using the Booking Calendar plugin for wordpress. It’s going to be used to book boats in a lake, and for that i want to remove the confimation mail. Is it possible to make it approve automatically when someone books, to simplify. I want a person to be able to book a day, and when he presses “book” the slot should be booked without a admins approval. And i was also wondering if there is a possibility to make more than one booking calendar for different lakes. Also there are maybe 2-3 boats in each lake, is there any way to make like a combobox where you can choose which boat, so that you can book one boat and still have the two others up for booking?

Thanks in advance!

Rownie.