"2) Definitely like the trailer over a tent, however we were stepping all over each other with how tight the inside of the trailer was. We also had significant “issues” with not being able to separate us (the parents) from the kids when it was bedtime (i.e. lights on)."
I have camped in pup tents, wall tents, pop-up campers, slide in campers, travel trailers and a 32' motor home. They all have advantages and drawbacks and you figure out which one is best for you. A lot depends on where you want to camp and whether being with nature is the main feature or just a home away from home that allows you to be comfortable while enjoying living somewhere else for a time. While stopped it is almost never big enough and while traveling it is almost always too big.