First thank you for your detailed explanation! This will help me a lot.
A few comments; I don't really care what kind of milk it is and I also don't really care about the eggs because if I want a real breakfast I just go into the next diner and have a way better breakfast. Credit Card is without a SSN not that easy so I guess I can not take that chance. Mostly I would like to use the rewards for free upgrades and points.

After looking more into it I'm currently favoring Wyndham because they have Tripadvisor ratings integrated into their app and website and I'm perfectly fine staying at a Super8 if it's a good one!

After the 60 days I'm most certain not going to use the rewards program again.