I've heard that you can now book the character dinner separately, so I'm hoping to be able to try that next month. When I looked at the various components, it just wasn't worth it to me to do the package.
I did not experience it, but I was following some of the twitter bloggers who did go and they weren't too impressed. You meet only 2 characters (you choose which ones and the waiter will bring you over when they are meeting together), so it's not like a character meal where they are walking around.
For Spiderman, that is the only way to get a full-on meet and greet with him. I guess now he is making an appearance either by a taxi cab or on the stage a couple times per day, so you can see him and maybe take a photo, but it's not an organized photo opportunity.
I probably wouldn't bother, especially since you can find other discounts or deals without the signature package.
You get to meet all 3 at the marvel meal and the food reviews say it’s very good. We go on Monday so I will confirm if this is the case then. But from seeing the vlogs on it, it looks like my fussy 6 year old will be very happy with the food there.