We have arrived, folks!
I have not put a pair of diapers on Tatum for three days now (except for when she goes to bed).
Basically, it went down like this:
Mommy: Tatum, tomorrow, you are going to go on this potty before we leave, then you can wear these DORA Pull-ups. (note: the Tot had to be excited about the pull-up character)
There was not argument, but there were moments in the day when she wanted her diapers back on. This is what we called “an accident.” It caused her some embarrassment and she wanted to give up; but we fought through and I told her that she could do it! I promised her ANY kind of panties!
Minnie, Dora, polka-dot, striped, colors…. She said, “I want Grover panties.” OK, so my kid wants a monster on her bum. Hmmmm.
So today, we went to Target and searched for some that she would like. Zip. Nothing really cute. 
Minnie was the only kind that were decent, so we picked those and she tried on every pair when we got home.
Now that is a big girl.