Expiration dates aren't written in blood. If you have a good cold fridge, just smell to see if it's ok. Not too far beyond the ex date though.
I was at the grocery store last Wednesday, in the middle of the day. In the produce dept. I stood next to a woman with a toddler, looking at those expensive already cut up vegetable and fruit trays.
I saw that there were a few packages of cut up vegetables on kabob sticks (mushroom, red onion, zuchinni, red and green pepper) that were at the "sell by" date and going for a dollar a piece. I picked up one to check it out, and the woman saw me do that, picked up one too, then put it down with a disgusted sniff and pointed glance at me.
They were perfectly fine.
I cut up the veggies from 1 package that night and serve w/ rice and soy sauce, and used the other one the next day in some chili (except for the mushrooms, they went into eggs)
People get overly weirded out.