@takealettermsjones
so is it really that hard to say 'This area is just for babies' or 'careful, she's only little' to an older child every so often? I know that you think that their parents are lazy, but they are genuinely just giving their children age appropriate freedom in a safe place, and there's no reason to believe that they will take offence if you have to remind their kids of the rules
I understand what you're saying, but why is it my job to remind someone else's kid of the rules? That's the parent's job, and also arguably the staff, which is another bugbear of mine - why have age restrictions if you're not going to enforce them?
Being too rough in the baby area is not "age appropriate freedom in a safe place". Nobody here is particularly bothered about 6 year olds going down the baby slides, what we're bothered about is those older children actively hurting the younger ones and/or preventing them from using the equipment/toys that are made for them.
If that's happening, the parents (in my opinion) don't have the right to just sit back with a coffee and tell themselves it's the circle of life - they need to step in and reinforce the rules with their kid.
Because you're there, looking after your small child, and it comes with the territory in the same way that you would be encouraging turn-taking, gentle hands etc with children who
are in the age-appropriate area. And in the same way that parents of older kids will often help a younger one if they are lost, climbing up the slide as someone's coming down etc.
It also depends on the set-up of the individual soft play, but there are a couple of places local to me where the best view of the main play frame doesn't cover the exit closest to the toddler area, plus you have to walk past the toddler section to get to other activities, so there is plenty of opportunity for a larger, but still impulsive and poor at judging their own strength, child to wander into the wrong area for a bit even if the parents are trying to keep an eye.
There's a broad range of behaviour that could be utterly fine under most circumstances but dangerous in the wrong place and it takes kids a long time to learn when and where they can let loose, especially when they are at the age where they are the youngest in the big kids' bit, but still too big for the baby/toddler area.
Plus, I think it's extra annoying when you think that the parents just aren't bothered, whereas parents with more than one child might be taking one to the loo, breastfeeding a baby sibling, dealing with any number of things rather than just ignoring their kids.
I totally appreciate both sides in these kinds of situations though and perhaps I've just been lucky that I've always felt able to gently enforce rules with other people's children and been happy when others have done the same with mine.