You can buy a Tee with check valves built in and hoses that will allow you to use the high pressure from the motor home tank for grills and stove and also provides a connection for an external tank so you don't have to move the motor home to fill it.
If you do a search on "Extend A Stay" (Marshall Brass) or "Stay Awhile" (Mr Heater as I recall) you can see what they look like.
Clay (WA5NMR), Lee (Wife), Katie & Kelli (cats) Salli (dog).
Fixed domicile after 1 year of snowbirding and eleven years Full Timing in a 2004 Winnebago Sightseer 35N, Workhorse chassis, Honda Accord toad