Super easy spot to fill up! It even says on their website that this water is specifically for fill ups. The hose is just to the right of the front door. I’d park NEAR the handicap spot if you can. There were people inside working when I filled up in the middle of the day but like I said, the water is specifically for fill ups so no worries!

City water treatment facility. Fresh water near the front door in the bushes to the right. Hose provided for extended access. You do need to turn off and on with the potable water key (provided)to the right of the hose. There is also a dump station but we did not use it.