When you refer to travel trailer, are you talking about a bumper pull or a 5th wheel. It means a lot in how they handle.
I am going to assume you mean bumper pull ?
The folks above keep mentioning tow vehicle length. With a bumper pull travel trailer, you can get into the tail wagging the dog if the wheel base on the tow vehicle is not long enough in relationship to the travel trailer.
Also with a longer travel trailer, some fuel stops (depending on your tow vehicles fuel) will be harder to get into. I just did a trip to Nebraska from Ohio and back and there were some stations that the diesel pumps were not the best placed to accommodate a crew cab pickup and a 30 ft bumper pull. I had to plan my arcs of travel carefully so as to not damage the trailer or other vehicles.
Also with a longer trailer, you need to look at the distance behind the trailer wheels to the bumper and the height of such. With a trailer that has a slide over the axles, the trailer sits higher.
Our old 2005 Forest River Salem would sometimes drag on the bump stops that had been welded on to keep the back end from dragging. The pivot point was such that if the angle of inclination of the (insert parking lot, fuel station entry, whatever) was a little too steep, then the back end would drag. I had thought about having solid steel casters welded on instead of just the flat stock that had been bent into a "V".
You also have to watch right hand turns and make sure you have enough room for the rear wheels to clear. When turning onto our street, I have to be over in the other lane and still swing into the other other lane when turning. We have ditches close to the road and the pavement isn't real wide, so I have to wait until there are no cars in order to use both lanes.
The wheels of the trailer do not follow the same arc as the wheels of the tow vehicle.
Is it all manageable, of course, you just have to be cognizant of it and learn to deal with it.