Apparently, Pink Lemonade is a hexaploid. Yet in the south, they recommend cross pollination with a rabbit eye cultivar, for best pollination. It's hard to believe that all rabbit eye blueberries are hexaploids too. That's pretty rare in the wild.
Pink Lemonade is a V. corymosum hybrid (highbush), but hybrid with what I can't seem to find out. It seems likely it is with a southern species.