They might take it, but there is virtually no market for plastic food containers. Only #1(clear soda and juice) and #2(milk, laundry det.) can be recycled here. The rest are garabage and have to be sorted out at the facility.
Olives are delicious and good for you. I'm eating some now, right out of the jar.
DH-if you are worried about your impact, don't. You're doing great. You know what's worse than not eating olives? Starving. It's way worse.