I am prepared for the same show every night on the Fantasy but I find the shows odd as well. They normally cram everyone in so going to 25%-50% capacity in the theatre seems good enough if you were to run it 1-2 nights.
I think they decided to only do a single show as to not make the 3 and 4 night cruises too different out of the gate. I could see someone on a 3 night cruise being furious that the 4 night cruise gets 2 different shows and they don't when they are paying more per night.
I am thinking on Fantasy they will have 2/3 shows.
- Broadway Show 1 - Day 1 + 2
- Day 3 - Early Show is Broadway Show 1 + Late Show is Variety Show
- Variety Show - Day 4
- Day 5 - Early Show is Variety Show + Late Show is Broadway Show 2
I could easily be wrong though.