What we have found is that .... if your going to travel ... travel in style... 30 ft is a nice length. We found that its a better balanced trailer than the smaller 25 footers. If you check the hitch weight... you will see why we say that. In towing down the road... the 30 footer is much easier... and less suseptable to wind and trucks.. so we have found.
That being said we have always used the larger trailer 30 ft. As when we get their we usually stay for a week or two.. and the 30 ft gives you a nice glamping trailer with enough room inside for 4 people.
But... for travel from one place to the other and only camping for a day or so.. the smaller trailer is better suited... Most who use them only use 'em for a bedroom... eating and all is done in the dinner... so we have seen.
As to getting into places.. I have to agree... never had a problem with any of our trailers... and a lot of places are expanding their lengths to accmod the longer trailers as the 5th wheel group seems to be pushing 40 ft now. Most of the national parks don't tell you but, if you ask they always seem to be able to get the 30 ft trailer in. May have to park the TV somewhere else.. but then again... once you have arrived... do you need the TV till you are ready to leave?
I play more on comfort and storage... lord knows how the other half loves to take everything.. and the kitchen sink too... we won't talk about shoes... but if thats not enough wait till you get on the road.. and she sees that once their something that she just has to have... yep... extra storage space keeps peace in the trailer...
Sometimes I think 30 ft is not long enough...
I wanted to start a new rule... you can take everything you can carry in one trip... ya that worked... My thinking was from the house to the trailer.. Her thinking is when we get back home... is the trip... LOLL