Pets only in carriers
Double check the interior for belongings and debris.
I hope you return the car in the same condition you picked it up in.
If the car is in good condition, but the floor mats have gotten a bit dirty? You'd be doing me a much appreciated favor giving them a quick shake out.
Did your road trip collect dust or bugs on the outside and debris on the inside? If you run it through the car wash and give it a quick vacuum, I'll reimburse you $10 (via Venmo or PayPal) out of appreciation. (just include a photo of receipt)