I would suggest going by what Beau388 said. 10,000 miles in a year is a LOT for a typical RV classed vehicle, unless you're full-time... so once a year.
You could use some WAG ballpark math and estimate miles based on hours, then keep a chart... but I'm guessing you're still going to fall far short... unless you're planning on dry camping in very hot weather, and need A/C.
Therefore I would bet you'd fall under the "once a year" category. That's what I'd suggest, and call it close enough.
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