There are so many variables no matter the class of park. Pad length may be 30' but there is another 10' of space to the first obstacle behind the pad.
There might be a drop off preventing use of rear stabilizers. No big deal with a 5er or class A if you can tolerate a bit of jiggle & shake without stabilizer use. How flexible/tolerant are you of a less than perfect site? What are your driving skills at backing into awkward sites? How good is your spotter & how good are you at paying attention?
Size does matter but after literally hundreds of CG we have never not been able to get our <36' selves into a site somewhere in a CG that has had a 30' max posted limit.
Let me see what you have available. I'll tell you if we can make it work or not.
