The numbers were crystal clear though: bounce rate was the same for all the domains indicating that users were getting what they expected after clicking through.
Depending on your keywords you targeted in the initial campaign, you may run into some issues scaling out your campaigns into phrase + BMM match keywords as "rv recipes" & rv menu creation seem to be something people are looking for quite a bit.
Also, conversion rate is a better overall metric than bounce rate (harder to test that from the start though).
I'm going to restart the tests using three domains and let them run over an extended period so that I can see whether I am, in fact, getting users who're searching for meals vs rentals.