What do clients see and do on my booking page?

Five short steps. Their pet (name, dog/cat, size), when (hours or nights and a start time), where (an address, only for services at their home), notes, then first name + email and their card.

Card held, not charged. You get the request in Bookings with the card held. Accept within 48 hours to charge it; decline to release it.

They get emails. "Request sent" when the card is held, with a manage link to cancel free while it's still a hold; "couldn't take this one" if you decline.