we found out we were sailing with a large polka group on board. I also thought "cool, I like polka, maybe I'll contact them to see if we can pay a bit to get into some of their events." Their response, " No, we had to book through the group" So we said okay, never mind. Come cruise time various venues we usually liked to attend like the nightclub and such were closed to just them. Embarkation was a mess since they had to cater to the large group. And also dining was a challenge because, you guessed it "we have a large group on board". So it does and will impact any cruise - no matter the kind of group - any group of size makes an impact. Heck even large families can be a hurdle some times. One note: they did let the polka band perform one night for the "masses". It was fun. Just wish it wasn't such a hassle the rest of he cruise.