I work a regional propane/fuel/lubricant distributor. During the tail end of COVID we ran out propane tanks because you simply couldn't get them in due to manufacturer shortages

I recommended a tonne of folks to use 100lb tanks for their fireplaces/water heats/stove tops.

Protip, you can purchase an RV regulator with hookups for two tanks, allowing you to switch from an empty to a full tank by turning a lever. This allows for you to always have a backup tank in place.