Yes Serendipity 3 your Frozen Hot Chocolate is good, but it costs about $13!
I came here after hearing how good their frozen hot chocolate was and had to experience it for myself. I waited in a long line outside of the carry-out window and finally had my drink after almost 30 minutes.
I gotta admit it was pretty good, but it is not worth the hassle of waiting in line and paying THAT MUCH for a drink. In fact I remember freezing chocolate milk one time and using an ice shaver and it was about the same taste...
I realize this place is for tourists so I know to save my $$ for something else.