I have no issue with anyone taking a vacation without the kids, we all need it to recharge and rekindle. I am a huge disney fan, been over 30 times to WDW and about 8 to DL, but I wouldn't think about going without an 8 or 7 year old, and especially not telling them. They will find out, trust me. They will be hurt or mad. Kids are so much smarter than we think. Depending on their height, the kids are probably old enough now to do most rides. Just my opinion, but I would plan an adult vary somewhere else, take the kids to WDW, and when they have grown, go back by yourselves....and you know what, when you do, you will miss them being there with you. I do.