pulling a cargo trailer, stacker trailer,etc., is done many, many times everyday by many, many RVs... but you have to keep some things is mind, as the RV may certainly have the capacity to 'pull' it, but the realities of driving such a rig brings on new 'issues' if you are not confident or experienced, especially when backing, or when navigating fuel stops and maneuvering RV parks and campgrounds.
Whether to 'drop' any trailer, or tow dolly'd vehicle, before maneuvering to your rv site is something that every driver has to decide on their own, and it situation and destination helps make that decision.
Those parks where you will have a 'pull thru' site will be easy - pull in and park, period.
Those parks where you will have to 'back in'(much, much more common), will render a decision one way or the other depending on the layout, space, lanes, crowded avenues, places to 'park' the trailer away from the rv, etc. Not all rv parks and campgrounds are designed for this type of situation, and some even prohibit it.
I'll admit that we pull a trailer, a cargo trailer of sorts, which is called a 2014 Gulfstream 295BH bunkhouse camper, with our 2014 Thor Palazzo diesel pusher - not a common site amongst RVrs! But, it gives us the room to have our teenage sons along, with their OWN space, and Mom and Dad have their own privacy! It works, but with some major differences between towing the car, which is more common for us.
Turning a long rig is something to consider, as you can easily come in contact with your trailer.
Backing a trailer is also different, especially if it is a shorter one... you can easily jackknife it, and be in a big pickle.
Driving down the road is easy with a trailer, it's just the other stuff that makes it more of a challenge. Fueling: you better 'plan ahead', that's the best advice. If you have a gas RV, using 'truck stops' won't help - that's only for diesel.