My RV is just under 22 feet. Overall I have not had the need to drag a toad with me. But, let me first say that my travel plans are designed around not having a toad. So it's not that one isn't necessary based solely on the RV size, it's that one is not necessary based on how I plan my activities based on not having a toad with me due to the RV size.
One important item is that length isn't the only consideration; remember the height and width could be issues at times. I may not be able to fit reasonably in a parking lot close to an attraction, or park along a street with low trees. There may be an attraction where travel could be hindered by low clearance or too narrow a winding path. So, planning to avoid problems is just part of things when going without a toad.
I think the biggest issue are the hookups when staying for days at an RV park and using the RV for day trips. Many get tired of the hook ups each time they leave and come back. This can easily be solved with repetition and easy connectors that lessen the hassle factor. Of course if you're sightseeing during travels between spots, it's no big deal.
Another handy way is to use the RV as transport. I may travel from the RV park to a sightseeing destination but park in a convenient (and safe) spot where I can bike to the finial attraction. Nothing says you have to have the RV right outside the door. I have gone places, parked a couple miles away, used the bike (electric) and been at the attraction while others in their cars are stuck in traffic, circling parking lots looking for spot and end up still parking way back with a decent walk.
This doesn't mean there hasn't been times where a toad would have come in handy. I have had to rent a car once or twice to be able to go somewhere That an RV or a bike (electric or peddle) isn't practical. But for those few occasions, I have to decide to get alternative transportation or forgo the attraction; it's just planning. I found that there usually isn't that may places I can't get to due to my RV size. And, if I can't get right to it, I can at least get close enough that a short bike ride is worth not having to bring a toad with me all the time.
