I can agree that you will not get your own personal bottle of any kind refilled with water at any Disney park location. Years ago, Animal Kingdom had a personal mug of soda you could buy (no, it is NOT there anymore so don't say it is

) and then get refilled during the day. My mother-in-law's sister was so happy with this so she bought one and just loved the design. When she went to get it refilled, the server handed her a paper/plastic extra large drink. The sister was outraged! She wanted her drink in her mug! She was very loud. The server explained that the refill needed to be poured into the sister's mug by the sister herself. The sister screamed, "WHY?!" The server replied, very calmly, that there was no way for the Disney Cast Members to know where that refillable mug had been in the time the sister bought it and when she brought it back.