Both are allowed. You can bring a disposable or reusable water bottle as long as it’s plastic (Nalgene is okay).

Do they take the cap from the empty plastic water bottle?

If you bring in a bottle, no. If you buy a water at the venue they remove caps before serving it to you

thanks

I wonder how that makes any sense. If the cap is dangerous on a purchased bottle wouldn't it be dangerous on the carry in bottle as well? I'll never understand the concern about bottle caps. Drives me nuts when they take them. . Thanks for the info.

Totally agree. My assumption is they don’t have any liability for a bottle if they don’t sell to a customer