It's a pretty great amenity to have! I was impressed when they got added, they certainly improved my guest experience!
A Freestyle within the resort would work wonders for the Boardwalk. Their sole fountain machine is constantly out of ice, and cannot keep up with the demand for the entire resort. Additionally, the "boardwalk" itself feels more formal than other areas of the resort, so it's odd to have such a long commute to get a soda, along with feeling out of place wearing more casual clothing on the boardwalk. The issue then arises that the pool bar is the best location to get soda (and yes, the bartender will refill your mug), but then you feel as though you're pestering the bartender, and actual customers leave the bar because of the line of guests that just want their mug refilled.
Anyways, I agree with you. Caribbean Beach did a great job getting the scattered Freestyles throughout the property, and other resorts should follow in their footsteps given how little room needs to be put aside to install a Freestyle machine!