A very, very long time ago a charming boy attempted to take me to Serendipity around Christmas. The three hour wait foiled that plan and we ended up at Patsy's across the street. It took another two years and better planning, but I finally went this past Christmas with my parents. The decor at Christmas is worth the wait, but on a normal day it isn't quite as pretty and I'm not so sure. It won't look anything like the movie at least, and, let's face it that is probably what you are expecting.
Today's trip was the first time I tried the food and while it was decent, I suggest that you simply do dessert. The t BLT and fries were perfectly decent, but the portions were small for their price ($13.50) and fries were a la carte ($3.50). That is what you get for going to a "tourist trap." One that Tyra Banks frequents, but nonetheless a place for tourists.
The dessert options make the wait worth it, at least once, though. The Frrrozen Hot Chocolate ($8.50) with real, not sweet, whipped cream is delicious. It actually tastes like chocolate; you can almost imagine falling into love movie-style over it. I can't decide if it tastes better when eaten with a spoon or with the straw. I suppose that is why they give you both. While there with my family we ordered the Strawberry Fields Sundae ($13.50) and it was delish as well. Both desserts were generous enough to share, so remember to do so.
Location: 225 East 60th Street (between 2nd & 3rd Avenues)
Hours: Sun-Thurs 11:30a-12:00a; Fri 11:30a-1:00a; Sat 11:30a-2:00a (be prepared to wait ~2.5-3 hours regardless of when you go; if you are lucky you can call for limited reservations during certain times of the year)