Well I am genuinely very glad @Thecows that my suggestion that the under 2 year old, but over a 12 month old, might like to have about 40 minutes or so in a soft play place, while Mum and the 6 and 9 year old had a drink, and a piece of cake, or such like, has given you a laugh, I really wish that I could still laugh so easily!
I was only trying to be helpful by thinking back to when my 3 children were still little - mostly in the 1980s - and we didn't have anything like soft play at that time, and on long days out I would have loved to be able to have a short break somewhere, and have a cup of tea while my youngest coild have a break from their pushchair, or car seat. So I was just wondering what the OP could do for
a short time with her delightful little one, and it also wouldn't matter for that short time whatever the weather was like.
One of my favourite TV programs quite recently was about that shepherdess and her husband and their large brood of children, where they all lived on a North Yorkshire farm - sorry, I can't remember what the programs was called, or any of their names now 🤭 - Anyway what I loved most about that program was how all of the children had so much freedom to play, and to help their parents on the farm.
Each week I enjoyed watching the children's freedom, and the antics they got up to, including at least one of the very young girls helping a sheep that was struggling to birth it's lamb! But I don't think that even that mum would have let her under two year old child go off exploring rivers and woods in the LD, without very close and trustworthy supervision! If she had done so, couldn't she have been legitimately accused of serious neglect of a baby?
When I replied to the OP, I had no idea if she was going to be the only adult in charge of a baby, a 6 year old and a 9 year old, so I was thinking in those terms when I gave her my response 😂