Asklemmy

The caravans in this case are a type known as static caravans - basically the same sort of accommodation as a mobile, towed caravan, but usually bigger and more or less permanently positioned somewhere. They even sometimes have additional casings that hide the wheels underneath to make them look more like houses.

EDIT, as I didn't answer your main question. A caravan park is a term used both for something like a trailer park, where customers tow in their own caravan, but also, as in this case, for a holiday park with these static caravans spread around, similar to small lodges.

Behind the bar - yeah, that's what they mean here too, the people who serve at the bar. As it's in a holiday park, it's likely that it's a family friendly bar where kids are allowed to be as long as their parents are with them, and can even probably go up and order snacks or soft drinks by themselves. It's not a bar bar in the usual adults only sense.

Tragic story :-(

We don’t really do “RV”s. Our roads are narrower, and parking is a mess. We have caravans, towed behind cars, but again not very common.

A caravan park may accommodate RVs or whatever, but mainly they are like your trailer parks, but more for recreational than residential use. Sometimes the park will have its own restaurant / bar building for refreshments.

We have many family-friendly bars, particularly during the daytime, and at venues serving holiday resorts like this.

Caravan parks are usually a form of vacation home (often rented out by the owner) so although they sound like a trailer park, they don't have the connotations of "trailer trash".

The parks are often in a resort-like setting, with video arcades, bike rental, mini golf, cafes and clubs.

The clubs can be family-oriented so it's not unusual to have kids there too.

Here's where I spent several happy childhood trips, feeding 10p's into arcade machines: there's an arcade next to the club. The family would spend each evening in the club which had a bar and live entertainment every night (I mean songs, comedy etc, not erotic dancers).

https://maps.app.goo.gl/h7SzxRvNAGcsm8a68

Looking at it now, it does have a low-budget vibe (there were communal washrooms, no toilet or shower in our caravan!), but as a kid, I loved it.

Not a brit so could be wrong, but in terms of the caravan park: I've seen stuff like that in british shows like "rich kid skint holiday". You can rent out a caravan to stay in for cheap, so it's basically a room one step above a hostel but below an airbnb or a hotel

And for bars/pubs.. well in my country at least a lot of bars are essentially just restaurants with a bigger alcohol selection, you can just go there to get a meal and enjoy the atmosphere, so it wouldn't be surprising seeing a 10 year old with family there

Again, im not from the UK so im just assuming :3