Chat up the desk clerk or near by gas station person. Or find the local PD and ask them to "Verify" your odo. don't use the word document when talking to the PD, it makes them think they might be liable. Verify doesn't trigger that response. Get that odo sign off done the night before so you can focus on just getting the receipt and hitting the road in the morning. I'll go check receipts the night before in a case like that too, so I know where the good receipt is when I'm at that location. Makes for a zero hassle, zero stress start.