Personally I don't think the vendor management part is that useful. Tracking expenses yes, but getting more detailed than that is probably unnecessary. Another

Personally I don't think the vendor management part is that useful. Tracking expenses yes, but getting more detailed than that is probably unnecessary. Another thing to track is deposits! Re pricing make sure you make that clear to users, but things like seating plans are normally done right at the end so it is a good tie in for you to get the recurring income (and the month they forget to cancel whilst on honeymoon) but personally I would still prefer a fixed price part.