we did this last year. Here is what I will tell you
1) Coral reef did an excelent job getting us to the CP. They knew we were CP guests before hand, and had our stickers ready.
2) Stickers are meaningless

. Seriously, the VP line wrapped almost back to italy. It was crazy. That was fast walking a family of 4 from dinner to the line.
3) without VIP there is virtually zero % chance you will see the show. They did an excelent job of putting everyone with stickers in the auditorium. Even as far back as we were we got seats in about the middle of the show place. Sure, you migt get a place to sit without CP, but its going to be in teh very back and you wont see much.
4) After the show, you need to hustle to illuminations VIP spot. Not because you will miss the show, but because there are multiple CP's during the day, and everyone who got a sticker can go in the VIP area. It is PACKED. we ended up not sending in momma and the baby, and just me and the 8 year old went in. The view from that area is pretty cool though if you havn't done it before