What kind of shopping?
I've been in snowbird parks that had their own stores, as much as you might find in a gas station convenience store, or a even short walk to a convenience store. Many larger parks are in commercial areas, where it is not too far out the gate to a supermarket or discount store.
But if you want fashion malls, big department stores, chain restaurants, these tend to not be in the same neighborhoods as long-term RV parks or other mobile home parks.
You can, in the right communities, expect ready access to public transit. I've been in parks that were a short walk to a bus stop (San Antonio) or served by directly public transit (e.g. trolley in Port Aransas). You do have to be in a municipality that actually has a public transit system (many places choose not to) and in a neighbor where there are other people for that system to serve: retirees, low-wage working people, etc. Buses don't as often serve the places where everyone has his own car and will never ride the bus.
Another opportunity for transportation, some large RV resorts in areas too isolated or too ritzy for public transit will offer shuttle service (as do many retirement communities).
So you can find what you are looking for, if you are willing to walk a bit or ride the bus, but this will narrow your choices somewhat because many RV parks are in places where such services are not provided.
But you are not going to find many RV parks in places where you walk out and it is like being in a busy big city neighborhood, nor will they be in places where it is a short walk to a big suburban mall. Land values in those places are not right for RV parks.
Tom Test
Itasca Spirit 29B