If you're staying in town this weekend and still don't have plans for the 4th, it's not too late to catch the spirit of '76; there are plenty of barbecue options within the five boroughs, whatever your budget or neighborhood. All the events below take place tomorrow, July 4th, unless otherwise specified. Head to Water Taxi Beach for the next best thing to the Hamptons. $25 gets you a regular evening at the beach, but......