The first (only) time we had a one-day at the parks was our first time staying at Pop. It was only my sister, my dad and I because my sister and I were going to two concerts at House of Blues, and we were trying to make the trip as cheap as possible, so staying onsite made sense (also for transportation purposes since my dad wasn't going to the concerts).
I guess my dad felt off knowing that we were in Orlando and not doing Disney at all, so on the in-between day for the concerts, we decided to do MK. It only felt weird for reasons that would've otherwise not bothered me which were:
-My mom wasn't there. Although my sister and I basically ride with each other, it still felt weird being at WDW without her.
-It was Halloween time and we werent going to
MNSSHP
-I spent so much time the night before on my feet at the concert that my back was killing me at MK, which kept me from riding some of the rides I would've otherwise ridden like BTMR. I didn't want to make things worse.
Except for maybe the MNSSHP, if my mom was there and my back hadn't been bothering me, one day would've felt fabulous. The three of us still had a great time though. My dad is so easy-going, it was really nice and relaxing day. Totally beat having a shopping day (which had been the original plan).