This is my go to water bottle for WDW. It's on the bulky/heavy side but leak proof and the filter works wonders

https://www.amazon.com/Brita-Stainless-Filter-Bottle-Carbon/dp/B08FSBZK82/ref=mp_s_a_1_3?crid=GN78FTUQYBDA&keywords=brita+water+bottle&qid=1687404476&sprefix=brit%2Caps%2C125&sr=8-3