We'll be staying there for the first time EVER Dec 5-13th!

I've been to Disney several times growing up, but haven't been there in over 8 yrs now and have never been with kids. So I've never even used a hopper ticket before. I can't decide to get one or not. We'll be there 8 nts and have 2 kids under age 4. So that is why we chose the Poly - so we'd be close by monorail to MK (where we plan to spend most of our time) and Epcot. We'll do one day at AK and one at HS.
My THINKING is that it'd be nice to have the hopper so we can go to Epcot in the evenings for dinner in WS area. But now I'm wondering if it's worth the $50 hopper option for 3 tickets to be able to eat there.
So those who are Poly pros, do you normally get the hoppers since getting in and out of MK and EPCOT is so easy in the evenings?? And how long does it actually take by monorail to get to both of those places from Poly?
THANKS!