dining recommendationfor 17?

I would recommend a catering option. Maybe you or a friend has a condo rec. centre with a kitchen. For a restaurant to hold that many seats for an evening is a real income killer, esp. if it is moderately price. Turning tables is how they make money. A catering evening lets you set menu, drinks, attire and budget. By all means call around, this is only a suggestion to consider. There are some wonderful local catering co. that do a great job

One more suggestion http://cafethirtya.com/ they have 2-4-1 entrees from 5:30 to 6:30 (not sure on the times but its like an early bird) and this restaurant is in Seagrove and fabulous.

Pandora's is great and reasonable, Hurricaine Oyster Bar also.....

I missed the part about an anniversary. Definatelty Pandora's and have it where the inside bar is, the ambience is awesome and the food is outstanding and won't break your bank!

Ms Cherry over at hibiscus b&b could definitely set something up, I was working with her on an anniversary dinner /vow renewal for my parents on our vacation. It is in Grayton though

This is a no-brainer!
Nicks On The Beach........the food is good and affordable, the menu has a great variety including a kids menu, and they have a "Party Room" that you could decorate if desired.
It's a laid back atmosphere that is family-friendly.
I think Nicks would be a great choice.

Marie's Bistro www.mariesbistro.com has a wide variety to please everyone as well as catering service

Maries had a party of 14 or 16 last night. Smaller place but you won't regret it. They also have a " family feast" portion of their menu.

I am sure Christiano's would be more than happy to work with you to accommodate your group.