I'll bet like Voyager, the only time there would be a problem with seats in Winjammer is on boarding day when passengers get on but can't yet go to their rooms. Its amplified then because everyone has their carry-ons with them.
Even then you can usually find 4-5 people at tables for 8, who are welcomed to a couple extras.
Completed first cruise 5/6/06 Voyager of the Seas - Eastern Caribbean
2nd cruise Majesty OTS - 5/11/07
3rd cruise Freedom of the Seas 4/27/08 Western Caribbean - Hump Balcony!!!
Next Navigator of the Seas 4/6/09 First time to Belize