So far I've gotten two affection hearts and all bloom dragons out of the whaleship shop ~
I can finally farm decent maps now (6-4 or 11-3 for chance of secret garden) and -30% stamina helps a lot. I heavily favor slice shops since most of my girls are slice. Difference between my neutral boat and slice boat is a mere 3.5k

Guess I will try to empty the ampies from whaleship shop next