First, let me welcome you to IRV2 Art.
Steve's remarks about conservation are good. If you want more propane, an ExtendaStay isn't hard to install. It's a tee fitting that connects right onto your LP tank shutoff valve. I have a combo unit on mine. It's actually a 4 way "cross" rather than a three way "tee". I can hook up an additional portable LP tank to feed the coach (that's the Extenda-Stay part of it) or I can hook up an output hose to run my gas grill from my main LP tank (that's the Extenda-Tap part of it) using the same thread as the disposable 1 pound propane bottles. This combo unit is readily available at Camping World or any other RV supply center.
I would also check with your intended RV park to see if they have LP cylinder rentals available or if they have a local LP supplier where you can get them from. You really don't want to haul a big 100 pound LP tank around in your motorhome's basement. It's big and bulky, heavy, and isn't very safe. If you can get it once you arrive, that's be the easiest.
As a new member you may also want to modify your signature. If you include basic information about your coach, toad, etc it'll be easier for others to better understand your posts and you won't have to type it in every time.
Again, enjoy the forum. I'm sure you'll find lots of helpful information here. There's lots of good folks here who are more than willing to help a fellow RVer. Be sure to post often with any questions and also please share your experiences with the rest of us.