I've done 2 Beyond Marathon events and would say the food at aid stations is variable, not consistently high like Centurion. Most stuff is from the Asda value range, but there will almost certainly be a hot food one with extra bits and some homemade stuff here & there.
If there is something particular you want then I would pack it in your drop bag or carry it. Also, avoid the jelly beans, they look nice but are the chewiest things ever and a handful of them will take you 5 mins to get through!
I carry micropore tape with me on ultras. Have never had problems in training runs but felt hot spots forming in 2/3 of my long ultras, both times early enough on that I needed to stop and do something about it and both times I'm glad I did.
5 mins to stop and sort yourself out is nothing compared to letting a blister form and suffering for another x hours.