Opinions will vary on the vouchers. I can only speak to the $29.50 lunch vouchers.
First of all, I was able to purchase 4 vouchers from another DIS poster for $20 each. The poster was unable to use them and offered them for this price. This turned out to be a very good deal for us. We used them at Restaurant Marrakesh and Le Cellier. My DH & I used one (split the entree and appetizer) and my DB & DSIL used one at each restaurant. We purchasd an extra drink and an extra dessert. Left quite satisfied. Potions at these two restaurants were large.
Had we paid full price for the voucher or been unable to share, I don't think we would have gotten our money's worth. For us, it definitely wouldn't be a good deal if we each used a voucher. The vouchers cover an appetizer, an entree, non-alcoholic beverage and dessert. We simply do not eat that much at one time and would not order that much food for one meal. To me, it's like buying something that you don't really need and thinking that you saved $$ because it was on sale.
That said, for those who eat more (especially more of the expensive menu items) or like the convenience of prepaid meals, I can see where they would consider it a good deal. The vouchers do include a 15% gratutity and the 6% FL tax. It might be a way for some to try out some of the more expensive restaurants.
For us, joining Connections to get these vouchers isn't a good option. I doubt we would use any of the other program features and I don't like the idea of joining and then cancelling 30 days later. JMHO. As I said, opinions vary and mine applies to the lucnh vouchers only. No experience with the Q & C variety.
Hope you get lots of opinions and have a wonderful trip!