It would be nice to do well but Dyche has never bothered with the cups in approaching 6 years at Burnley - embarrassing exits against Accrington, Port Vale and Lincoln.
Good news for you if it is Burnley first game! (provided BFC get through first qualifier).
Burnley's first two PL fixtures will be on a Sunday because of the Europa Cup so you would be able to enjoy the wedding without worrying about the result.:)
Might be a bit of a pain for those Seagulls...