I have a client who wants to pick up their dog earlier than initially planned. I am fine with that, but feel I should still charge what we planned since I couldn’t book another dog. Am I wrong? Any recommendations?
No, you are not wrong. Is this only for one day or more? If it only affects one day, then you may want to be more lenient if they are a regular customer or you feel they may become one. But since it is holiday time, with higher demand, people really shouldn't expect full refunds at the last minute.
Your policy on cancellations applies and the amount of their refund (if any) depends on when they cancel.
No, you should not offer a refund if a client wants to pick up their dog earlier than scheduled. You potentially could have booked that time with another client. If they ask for a refund, tell them to contact Rover for assistance, that because of the last-minute change you cannot give them one.