As awful as that is, the design of those dumpsters will always lead to this. To put the bag in, you must hold the lid open well above your head (and higher than many people can reach) while holding a heavy bag of trash, then lift it even higher to get it in. If you are smaller than average (e.g. a child), physically disabled, or just not an able-bodied adult, that becomes impossible
Having been to both, I can assure you the rides at Cedar Point are much, much better. Disney World is a theme park with a full experience, such as themed attractions and cosplayers. It’s great for young kids.
Cedar Point has the awesome coasters that thrill -seeking adults will want. It’s more like Universal Studios or Six Flags