We went today, after I finally got a reservation and we hated it honestly. I think your experience all depends on timing and where you get seated. We (party of 2) got seated on one side of a booth with a party of 4. (No problem with sharing a table). However our location was the very back corner of the 2nd room, and as we were on one side of the booth, our only view was of the emergency exit door.
We stayed at table for 30 mins of the time limit and spent the last 15 mins walking around trying to see some of the effects. We didn’t see anything, no special sound effects, not the talking bird, not the ships battling, nothing going on behind the bar, no pirate songs, etc. we stood behind people just waiting but never saw anything (or heard anything) special effect wise in the 45 mins.