Remember that the Alternative dining (not the speciality dining) is held in buffett dining room but it is a sit down dinner with service. You get up and go to the salad bar. There are tablecloths on the tables and of course you have the wonderful view. We sometimes do this option when it is available. I'm not sure if it is available every night, but it requires a reservation and of course there is no extra charge as there is in the spciality dining room
Actually, there is now an extra charge ($3.50 per person IIRC) for Celebrity's "Alternative Casual Dining."