It’s also apparent that you still have a leak in the fresh water system; maybe not a hole, but quite simply a leak at a connection caused by the wracking and twisting of the coach as it travels down the road. As for pressure regulation, I always recommend a regulator if the incoming city pressure exceeds around 65 PSI. Perhaps the maintenance person at the resort will actually measure the city pressure at your site to determine if the regulator is truly necessary. But it certainly would not hurt to always use an in-line regulator.
Still, it is apparent a seeping leak still exists and must be located and repaired before structural damage occurs. Mold and mildew are also a concern if left unattended. There should definitely be no water retention in between the floor and sub-floor, ever. It’s paramount you have a certified RV service technician inspect, diagnose and repair the leak(s) as soon as possible. Leak repairs should not be that difficult to diagnose with the proper testing equipment. It can be determined in a matter of fifteen minutes IF a leak exists. The repair however, may be more difficult to effectuate, but a quick diagnosis could lead to a quicker repair. Try to locate a service facility in your area that employs Certified or Master Certified service technicians. The Industry Certification awarded by RVIA and RVDA means that technician has been tested and is qualified to perform professional RV troubleshooting and subsequent repairs. Look for the certification patch (see photo), on any RV technician working on your RV or ask to see their certification prior to authorizing repair work.