Check out a new great pizzeria/ restaurant called Antonio's on Long Beach Rd on the border of Rockville centre and oceanside. The portugese food is better then Estoril and the prices are inexpensive. The italian food and pizza are excellent. They don't have their liquor license yet but you can bring your own wine. Dinner entrees are $7.00-$14.00 include a salad.
Best kept secret in Oceanside since Sole'. I have been there 3 times and each meal has been excellent.