EAST QUOGUE: It’s a little known fact that the 7-Eleven in East Quogue is the busiest in the country. Located at 397 Montauk Highway, the 24-hour convenience store is your one-stop-shop for everday essentials: chips, pretzels, beer and, of course, Slurpees. Or, at least, AOL’s Daily Finance website reports that the vast majority of East Enders feel that way. So, how many of our Dan’s readers have been to the Sevs in East Quogue? Is it No. 1 because of its location, or does it sell above average treats?