The answer is it depends. There are three or four different outcomes.
Some lodges (like the old Taylor MI lodge that is no more, Las vegas,, Palmdale, CA and a few others I've stayed at) have "RV sites' Generally 30 amp power.. Some have water and sewer or at least a dump station (Taylor did not have sewer)
Others 15/20 amp power.
Some just parking
And in some areas state or local laws or ordinances prohibit (In those areas you can't stay at a Flying J or Cracker Barrel either).
There used to be a phone app "Moose finder" as I recall that listed which lodges had what but
1: it was a tad clunky and 2: the database is a good decade or two out of date.
I've stayed at
Las Vegas
Palmdale
Taylor (Before it closed)
Lilly KY (London lodge,, not an easy drive but a nice lodge 15 amp and a dump port)
Boling Green (Also KY)
Flushing MI (one 30 amp site one 20 no sewer
one other in MI (also 15 amp)
Elkhart INdiana (parking only)
One lodge in NE. but no overnight there (This was a day visit meeting a friend)
A few others. which I've forgotten. Including one in the Carolinas (Ashville????)