Requesting high chairs

[TinkerKeeks]

I'm wondering if there is a way to note that you need high chairs on your reservations. I am concerned because I have 3 little ones in my party and will need a high chair for each of them. Do you think most restaurants carry enough to accommodate us, I mean it is disney so I'm thinking they have a ton. Just wanted to know if there is anyway to give a heads up that I would be needing three.