RV'rs with own washer bumping laundry users for the dryer

I understand the OP's frustration. Used to see it all the time when I lived in an apartment and made weekly trips to the laundromat.

Here's what I did: carry an extra towel. If it looks like there might be a problem getting a dryer when your washer is done, just put the towel and a quarter in the dryer. When your washer stops, you have a preheated dryer all your own. :C