Not sure where you heard of people being shut out of shows? Just off 9 days on the Anthem this morning and never once was shut out of seeing any show I wanted without reservations (Cruise was at 4800-4900 passengers). Was able to walk into 2 WWRY shows w/o ressies and there were plenty of seats. The only show that has limited seating was Spectra Cabaret. Since it is in two70 there is very limited seating but seating in the Royale Theater was plentiful. I not saying don't get ressies but don't worry you will be shut out of shows.