Are Hydroflask bottles allowed inside the parks?

Yes

You can take water and food to the park. The refill beverage is convinient. You have iced tap water available in the 50s resto, next to Transformers, and some others.

Yes for sure

Yep. Definitely bring yours or you are going to be sad.

sure is. no PROMISES as to what amusement rides you are allowed to take it on though

Thank you all for your help! Beats having to buy $5 waters there!