If you're a last-minute person, this guide is for you. You can save a lot of wear and tear and keep your frenzy to a minimum with these handy numbers. If you need brochures on places to stay and eat or things to do, or if you want a beach house for a week, the local Chamber of Commerce can help. Also helpful for beach-house rentals are newspaper classifieds. Look under Seashore Rentals; Waterfront, rent; and Vacation Places. Expect to pay $350 to $1,000 per seven-day week. Also, most hotels, motels and rental properties don't allow pets. Beaches don't like Fido much either.

Campsites are one way of assuring your place in the sun. They range in price from $8 per night to $12. IMPORTANT BEACH NUMBERS OCEAN CITY, MARYLAND CHAMBER OF COMMERCE -- 301/289-8559. PUBLIC RELATIONS -- 301/289-2800. BOARD OF REALTORS -- 301/524-6544. BETHANY BEACH/FENWICK ISLAND CHAMBER OF COMMERCE -- 302/539-8129. REHOBOTH BEACH/DEWEY BEACH CHAMBER OF COMMERCE -- 302/227-2233. LEWES, DELAWARE CHAMBER OF COMMERCE -- 302/645-8073. VIRGINIA BEACH TOURIST INFORMATION CENTER -- 804/425-7511, 427-4111 or 428- 8000. At 19th & Arctic streets. CAMPGROUNDS IN DELMARVA THREE SEASONS CAMPING RESORT -- 302/227-2564. 11/2 miles west of Rehoboth. BIG HOLLY FAMILY CAMP -- 302/645-6838. Two miles north of Rehoboth off U.S. 1. HOLLY LAKE -- 302/945-3410. Six miles northwest of Rehoboth. TRAP POND STATE PARK -- 302/875-5153. Laurel, Delaware. CAPE HENLOPEN STATE PARK -- 302/645-8983. Lewes, Delaware. DELAWARE SEASHORE STATE PARK -- 302/227-2800. Indian River Inlet. ASSATEAGUE ISLAND SEASHORE -- 301/641-1441 or 641-2120. CAMPGROUNDS IN VIRGINIA BEACH NORTH BAY SHORE -- 804/426-7911. KOA -- 804/428-1444.