Campground Master does support "Scheduled" sites so you can do reservations in 1/2-hour increments for the pumper trucks. See the docs:
http://campgroundmaster.com/help/hou...servation.html
You can link the pumper reservation to the main site reservation and put it on the same bill (use Sub-member linking).
It would be a little trickier to do a report that would show which site the pumper reservation was linked to, but it's possible with the query function and various expression functions available.
Stan Spielbusch
[Forum Administrator]