Plug-in solution for purchasing a day pass?

I have a client who uses Campspot for online reservations of RV pads and campsites at their property via their WP site. They also offer day passes for hikers, etc. however this kind of transaction is not possible via Campspot. They want an option for a user to purchase a one-time use day pass. So far I haven’t found an easy solution to this. Booking plug-ins won’t book for a single day. Reservation and ticketing systems might work, but I’m hesitant to waste time installing and testing individual plug-ins for just this functionality. Has anyone had any experience with this type of booking/reservation, etc.? Or any recommendations that might work. I’d greatly appreciate any input. Thanks everybody.