Hello Quincy's mom
Sounds like you lead a fun life traveling all around - I know there will be someone on here to help you and Liz with your questions. You mention that Quincy has lots of pup friends and grew up with labs. Do you currently have other dogs that you travel with besides him?
Liz,
Do you have any other dogs besides Simon? If not, in what situations is he food/toy aggressive? when visiting other people with dogs, or at a dog park? I guess I am asking if you don't have other dogs, in what situations are you feeding him around them where he would want to guard his food.