Hi Amy,
Poor Bradley

. At least you've got a diagnosis now. I know there are a couple of people her on COL whose Cockers have had Giardiasis, so hopefully they will see this and have some good advice for you.
In the meantime, be very careful to clean up thoroughly as the Giardia cysts can live in the environment for months and are resistant to cold weather and water, so Bradley could become re-infected or other dogs could become infected.
I hope you all enjoy your camping trip, but be careful not to overdo it with Bradley's walks. Even if he was fit and well he should only be doing short walks at his age (about 5 minutes for every month of his life, so max. 15-20 minutes at a time) and as he's poorly he'll need more rest.
If you've got time, why don't you introduce yourself in the Introductions section on here and post that really sweet photo of Bradley sleeping with Toby

Elaine xx