If you go on Celebrity websight you can go on virtual tour of all ships,showing cabins,dining rooms etc.,it`s worth a look!
Have just come home from a cruise on the Mercury and the dining area is really very beautiful with large windows at the back and on both sides of the ship. Like all Celebrity ships it is on two levels, but a wonderful dining experience awaits you. Their menu always have a option on the bottom left of certain appetisers/main dishes that are available each night if you find the optin on the menu that night does not suit you. I love shrimps and that is on the optional list.