food for SF avon walk?

[Guest guest]

HI all,

My celiac sister and I are walking in the Avon Walk this weekend in SF. We have

to bring our

own food, as they can't (won't) accomodate our diet. Any ideas on what we can

bring?

it needs to

a) last in a cooler all weekend/or be stable--no access to microwaves either

be satisfying since we are walking a marathon

c) we are staying in union square before the event...any restaurants in that

area people have

eaten at successfully? there's a cheesecake factory, but it sounds risky...

Thanks in advance!

Jill