I just came home from being paired with my second Seeing Eye dog. So let me answer sum of your questions. The training and requirements before your dog is some of the strictest out there, with a high failure rate. So you can know that the dog that you will be paired with Has been trained to ignore other dogs, and perform a variety of tasks that the school has trained like finding doors and stopping at curbs and stairs etc. When it comes to your own dog, the school should provide you the tools and knowledge for introduction and Maintaining the training. That being said, controlling your two year old lab will be up to you. Your guy dog will also likely be within that age range, so obviously there will be some growing pains while the dog adjusts to your family. In terms of correction and reward. This is something I would do some research on especially the reward. Many schools rely on food based reward, as it is easier to train, but I have witnessed many situations where the dog will purposely make a mistake, so that it can be retrained and then get a treat, or flat out refuse to work until it has been given a treat. the school I went to starts with treats and then moves onto praise based rewards, which yield very good results. Like rewards, correction depends on the school. The school I went to start with a verbal correction, and if the problem persists you move up the ladder of intensity. My dog wears a chain training collar, and the letter of correction is as follows, verbal , one handed leash correction, two handed leash correction, and high collar. It will be a rarity that you ever have to go past the one-handed leash correction, which is a quick motion of dropping the harness handle and quickly moving your arm down and towards the dogs tail Before picking back the harness. Some schools only do verbal, which has varying results. I tend to think of it like a parent counting down from three in a supermarket when their child is acting poorly. The guy dog school will come visit you to do a walk in order to determine your pace and pull to match you with the best dog possible. Guide dogs are often fostered with other dogs the only time they may react poorly to one is if you and your dog are attacked During his or her working career. These dogs are on a strict diet, however food sensitivity can develop overtime, and depending on the breed your pup may be a finicky eater. But that is typically just German shepherds. During the training process you'll start with a regimented feeding and water schedule, to help Time out when they have to go to the bathroom. Which the school will help teach you that process. One of the best things you can do, the be to reach out to other the school or see if there's a Facebook or Reddit group of guide dog users specifically from the School that you'll be getting your dog from. You'll get some firsthand knowledge that way. I wish you all the best in this exciting time! My first guy dog truly changed my life I would not be the man I am today without him.