We just got back and were on the Silver Plan. We had almost no problem using it. Most of our CM's were very helpful in getting up the most out of the plan, even putting extra's in to be covered.
Each meal comes with an appitizer, entree, dessert and non-alcoholic beverage and includes tax and tip. Tips were 15-18% depending on the restaurant.
Several times we ordered additional items (not alcohol) and they were placed on the bill and were covered with the wishes. Our last night, we ate at Askershus and only had wishes for 2 meals (there were 3 of us) I told the CM of this and asked for seperate bills , one for 1 meal, and 1 for 2 meals. When she brought the bill, everything except for the actual meal ($21.99) was on the bill that I was using my last wishes.(Askershus charges for beverages and desserts) I found that most of our CM's knew how to manipulate the wishes in our favor.
PS: we also used wishes for the Spirit of Aloha and the KTTK tour, we uaually ate at the higher end restaurants (as long as the meal only required 1 wish) and definately came out ahead, I'm disappointed that these add ons have been discontinued as we made out well.