There have been lots of great posts on here but I just wanted to add my story to the pot.
My sister & family (of 5) and my family (of four) & a couple are all going to Disney Dec 2005. When we first read of the MYW tickets we were disturbed as we were going to buy 4 day hoppers with no pluses at AAA and the new prices hiked the prices by about $20.00 a piece. After further consideration, however, we're OK with it and this is why:
We are renting a house for seven days (at $233.00 per family) and will be driving into the parks each day.
We have different styles.
My sister will get 5 or 6 day bought in advance hopper passes (that do expire) and they will go for a few hours every day. The prices only increase by $1.00 per additional day. So it will give her family total freedom and they will spend almost nothing on food in the parks because with 6 days of tickets, as soon as someone is cranky (their kids will be 2-8) they will come home, eat, nap, and swim.
We will buy 10 day no expiration, hopper, with pluses tickets. We plan to go many a time in the next few years, probably a day or two at a time. We also think we'll let their 8 year old come with us to DisneyQuest and a water park and leave our 4 year old at the house with my sister. We'll probably only use 3 of our days on actual big parks and we'll stay all day and eat there as I have a Disney Visa and should have about $200.00 in Disney dollars by then.
So for us, it has given us a lot of freedom to choose what is best, instead of simply what is available. We are both feeling that our trips will be more at our whim and leisurely. And actually, in the long run, we'll both save money. Plus we get to vacation together without being in each other's faces.
The couple is still deciding. This will be their very first trip to Disney World EVER! So it will take them quite awhile to read enough to know which way to go.
Just my two cents.
Esther