As a host, you'll be able to request additional fees from a guest from the trip start date up until 30 days after the trip has ended. This can be for damages, mileage, generator usage, emptying the tanks, refuelling the RV, etc.
To do so, access the booking in your RVezy account and scroll down. On the right-hand side, click on Send or Request Money.

You’ll be brought to a new window where you’ll have the option to either send money or request money. Select the Request money option.

On the next page, you’ll have access to the results and photos from your departure and return inspections (if completed) and the add-ons included in the booking (if applicable).
Below, you can enter the desired amount for damages, mileage, generator, and other fees. You’ll also have to provide an explanation for the fees which will be shared with the guest. Lastly, you’ll need to upload evidence such as photos and receipts to support your requested fees.

After you’ve filled out all of the fields and clicked on Request, the guest will be notified of your request. They’ll have 48 business hours to review your request, and will have the option to either accept the fees or dispute them.
You can edit or cancel your request for money after it has been sent, as long as the guest hasn't accepted it yet. You can view this article for more details: Can I edit or cancel a request for money?
If the guest accepts the fees, your payout will be issued and deposited within 3 to 5 business days.
If the guest disputes the fees, a member of our support team will be assigned to the dispute and will contact you within 1 to 2 business days. You’ll have up to 7 days after the dispute is opened to submit additional evidence, which you can do by accessing the booking in your account and clicking on the banner at the top of the page.

After collecting evidence from both you and the guest, our support team will review it and provide a final resolution. You can read more about the dispute process here.