Divorced with 4 kids

7 yrs ago my wife and I took my children from my previous marriage to Disney. I now have 2 children with her and she wants to take them to Disney now but doesn't want to bring my 10 & 11 yr old along because she wants to give the little guys all the attention we gave my 2. Here's the problem ...I love her with all my heart and she is my world but I could never & will never step on a plane to Disney and know I left my heart in the terminal. It's getting so bad I need some serious advice . She doesn't get it and I'm afraid she won't ever. I've explained it to her 20 different ways that we are as 1 . A family together . Help!!!!!!