Hi Fun Police.
Before buying the Sturt, we hired a Tvan and a Johnno's. This gave us the chance to find out lots of things that affected our decision. Like:
I may have had a four room tent
, but the pair of us can live in the Tvan for over a week (with rain), so that really is enough living space. I can easily see why people with kids would go the side fold.
The storage space in the trailer of a soft floor style is brilliant
Side fold tent means rear opening kitchen. Most of the time I leave the fridge (and other stuff) in the Jeep, and walking back and forth is a pain when we haven't unhitched (eg. overnighter). Actually, just having the vehicle 'behind' the tent rather than where I can see it makes me nervous as I have been known to forget to lock it. Rear fold makes me happier.
Having access to my 'stuff' from inside matters to me. With the Sturt I can either open up the back or lift the bed to access stuff whilst inside the tent. With the side fold I had access to some of my storage, but for the bulk of it I needed to go out to access from the back of the trailer. Makes a difference when you didn't put the awning up and it rains.
A soft floor means I can step over the entry, and inside is the same height as outside. With a hardfloor, every time I go in or out it is up or down one step. That is not safe with my dodgy knee. Oddly, climbing up to a bed is no problem at all, as I don't do it as often and can lean on the bed as I do so.
Beds are much easier to get out of from the foot. Less disturbing partner. Life is better this way.
My caravan park experience is limited, but one place we stayed had small sites where the side opening really didn't fit well. They were like a drive through site, but cut in half crossways. If you just backed in and opened up, you'd have been in the face of the people behind. Really should have unhitched and manually turned the trailer around. Don't know about you, but that is too much like hard work for me when it is almost dark after a long day. Luckily there was no-one behind us that night so we took up more than our space, but if it was peak time it would have been a real pain. The rear fold seems to fit the caravan model better - haven't seen anywhere it wouldn't work.
I'd strongly encourage some try before you buy so you can find out what matters to you. Google for hire a camper trailer and see what is available near you.