We keep a pitcher in our Owners Locker and use it every trip. We don't make coffee, but we drink mostly water and lemonade, and I cannot stand the taste of the tap water at WDW. We bought our pitcher and a pack of 10 filters at Costco. I think the pack of filters was less than $40.00, and at around $4.00 a trip for filtered water, that's a deal compared to buying it from Disney. I hate to pay Disney's prices for water--just one of my many issues.