Just returned late yesterday from 8 fabulous days at BCVs and we did online checkin and it made absolutely no difference. We were directed to the regular checkin line (as was my niece and her family) because online was hung up with a family that was having some sort of a problem. All in all, it was a breeze anyway but we may have felt differently if the regular checkin line was long. We will continue to do online checkin in the future.