Happy to hear you had a fun & safe
Parkliner adventure.
On towing our PL 35 behind our full size Van ...I keep it at about 55/60, and my wife keeps it above that. I had one instance when i accelerated from 55 up to about 65-70 to pass a class A going up hill on the Oregon coast range and there was a bit of wiggle back there but just accelerated through it and things straightened out.
On park fees, sounds like we are a bit spoiled on the coast with our sub $40 per night rates and much, much less for long term like us for our big rig on 50 amp service and the PL next to it on 30 amp.
Cheers,
Thom