Hi Philo,
Based on the trips I've done. For evening meals the hotel restaurants had large tables set out for the JY group. Each table took about 8 to 10 people. The meal times were fixed so we all ate at the same time. There were no set places so everyone just sat at whatever table they liked.
On one trip I took the hotel had a seperate breakfast room which had smaller table settings but again you just sat where you wanted.
Julian