I just made Rio's first grooming appointment for next week. He just turned 4 months and is *almost* potty trained. The groomer said to bring him in at 9 and it will take up to 4 hours before we pick him up. I'm concerned about potty breaks, food and such in 4 hours. I can try to potty him right before, but I would think as his schedule is going he would need to go again in the 4 hours. Do they bring the puppies out?? Such a newbie to all of this. Should I bring toys or anything for him while he's there??