In Terrence McNally's trenchant comedy it's the 4th of July on Fire Island where a brother and sister and their spouses are spending the quintessential American summer weekend in an unfamiliar setting. As their season in the sun unfolds, the two couples do their best to enjoy themselves despite their prejudices and insecurities. The grill is fired up, the drinks are cold, and the pool is open but no one is going in. Tues., 7; Wed.-Sat., 8; Sat., 2; Sun., 3. Call or visit website for variations in playing schedule.