Unfortunately, they won't be on the pack trip.You make me want to go fishing now.
There are lots of guides to hire out there that will teach you fly fishing in short order and provide all the equipment. It isn't prohibitively expensive. You can go for 2 hours, a morning, all day, overnight or week trips.
IMHO, that is the best bet. They'll show you all the best spots, get you started and you don't have to bring any gear.