Ok so we are going for a family gtg at a waterside park in Clovis. So we will have a table with shade. I am planning on taking the PnP for her nap in and maybe just for her to play in some. We will be there all day.
I am worried about it being hot and her possibly getting really unhappy. If we must we will leave early. However I would rather not.

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Re: Waterslides with 15 month old advise
The Blog | BirthbyKellyM
We went camping with Andrew when he was 7 months old and one day it was 104
. We had those squirt bottle/fan things that A mentioned and I literally sat his entire nap and held it up to him and repeated squirted him. I also had frozen some wash cloths and since they defrosted really quickly ( put them in little baggies and they'll be nice by the time you need them if you do multiple) we could lay them down on him, or even lay him down on them.
You could even get a clip fan for her pack and play so you can just clip it on the side to help keep her cool while she's sleeping. Other than sleeping I'd say the biggest thing is just keeping her hydrated since you'll have the water and the shade. If she doesn't drink a lot of water I would go for anything that she'll drink, juice, lemonade, gatorade ect.
Oh I think till 2 she would make it easy peasy! Maybe even longer, when you said all day I was thinking till 6 or 7pm and while she might make it that long I think it could be pushing it.