Well you didn't stay at the studio I was in at AKV because there wasn't one and when we asked at the desk they said you have to request them for studios but they sent one right up.
No, I've never seen a high chair in my studio at AKL either. Always values, though. I haven't seen any in the studios at BCV either. VWL was so long ago, I don't remember high chairs or not.
We have done a few studios and I've seen high chairs in closets in all except AKV (probably b/c there are no closets in AKV). I would call and ask for 1 if you don't see it in your BCV room. I know we definitely had 1 at VWL.