As a matter of course it is almost a given you need reservations at the ocean house...Why would you even consider taking a chance....
I would call them and ask if they recommend a reservation. I have always made 1 every time we go.
Usually if you get there early enough to get a seat at the bar you can eat in the bar and you won't need a reservation. Don't know if that applies for Easter though.
Thanks! Your answer is awaiting moderation.