You don't say when your wedding will be and that info would be helpful. Rooms in May and September will be less than June, July and August. And rooms from October to May will be even less.
A good place to start your search would be with these two websites.
www.ococean.com/rodney-saves/accomodations or
www.ocean-city.com .
I really love the Holiday Inn and Suites on 17th St., but in the summer it will be out of your budget. Off season, they have wonderful specials that would fit fine.
Honestly, don't limit your search to just the boardwalk. Ocean City is one long strip that is 10 miles long and there are restaurants, bars, amusements, and shopping on almost every block. And there is plenty of parking near the boardwalk for when you want to explore it.
Check out these hotels:
The Spinnaker on 18th
Holiday Inn and Suites on 17th
Dunes Manor on 29th
Rodeway Inn Oceanfront on 30th
Holiday Inn Oceanfront on 68th
Quality Inn Suites on 33rd
Princess Royale Hotel on 91st
Carousel Hotel on 117th
Econo Lodge on 145th
You might also be able to get a "mini-week" condo rental. The one drawback to a condo for a honeymoon is that unless the condo offers linen rentals, you would have to bring your own. And do you really want to be changing sheets and making beds on your honeymoon?
These realtors offer mini weeks.
Holiday Real Estate www.holidayoc.com Coldwell Banker www.cbvacations.com Vacation Rentals by Owners www.vrbo.com