I took the toilet off a week or so ago and the flange and foam seal under the toilet seemed to be intact. The foam seal was dry. If the flange screws in I would think it should still be OK. liquid in the bowl will seep out, or possibly evaporate, over time but it will stay in there for hours or days, generally until the next use. I think it is OK.
The bathroom in our camper is over a storage space and the plumbing that can be seen in there looks OK, except that the toilet to tank appears to have moved up a slight amount and the vent appears to have moved up an inch or so. Both of these in relation to the floor of the storage space. Any idea how the vent connects to the tank? My concern is that when the floor moved down either the toiler or vent may have disconnected from the tank, although I think from memory that the vent is sort of "free floating" after the connection at the tank except for a caulk seal where it comes through the floor. Somewhere I read that looking through the vent pipe from the top could be helpful. I'll try doing that today.
Thanks again for your help.