BOS really doesnt have the best food offerings. I fly out of BOS
1-4 times a month and it never gets better.
Killians Bar/pub that offers appetizers and beer
Au bon pain quick cart with sub sands(which are pretty good, thats what I usually get), salads, muffins, various breakfast breads, coffee, fruit etc.
Burger King (yuck)
Pizza Hut Express (gag)
It is pretty late, but that covers the majors.
The snack box wont keep you full. The turkey wraps do a good job, but they are not an option from BOS
Atleast you made a smart move taking a 757 instead of an MD
-80. MUCH better. If you aren't an AAdvantage executive member, I would suggest heading to the airport early and asking an agent at the ticketing couter for 9A C or E, those are still open right now so you have a good shot. Nothing beats bulkhead or 10A/F window on an AA
757. If the ticketing agent says no, try again with the gate agent. It is often that someone will get upgraded to first leaving 9A/C/D/F open.
You will prolly be leaving out of gate 28 or so which is nice cause it is right in front of security (for the lazy).
Enjoy your flight!