On your question about f/t, nope. I've never had issues with them accepting frozen thawed. These kids love to eat. My adults eat f/t adult mice, unless River is preggers, then she gets a couple hoppers per sitting to not stress her system with developing eggs.
This is my first pair of TPs and their first babies, so unfortunately, I don't have any other information regarding getting them to accept f/t. I was told when I purchased them that they are very easy to get on f/t though, that most will take it as a first meal. My kiddos hatched JUST as we started moving into our first ever house, and at the same time, my mice decided to explode with babies, so I didn't even bother to try f/t yet. I am actually wanting to try it this next week so I will leave a note for myself to write back on here.
Thank you for all the kind words everyone. I have new pictures of all the babies on my website (constantly working on the site but it's coming along nicely). Link