I have the opposite problem....my DS will only eat a jelly sandwich. And it has to be a strawberry jelly sandwich. And since all the uncrustables at WDW are grape jelly we can't even try to make him eat one of those.
Ha! Me too! And I was wondering if I could request a sandwich with no PB (with allergies you'd think this would be possible but I guess not...).
Fortunately my DD will eat almost everything else. Just not PB with her J. And yes, has to be strawberry jelly too