I was there last year, and the booths opened the day before - Thursday - not the week before. It was just as busy that day too, since they've been doing that for a few years.
I concur, but it was soft opening. Not all the booths were open, and not all the food/drink options were available.
On the flip - if you are onthe dining plan - it was a great way to use snack credits! Many places let you use snack credits for items that were over $4 cash price. Lucky for us, we had some.
WE went to Epcot that Thursday and Friday. It was crowded at the booths at night, but the rest of the park all day was not bad. Another year, we went on a weekend towards the middle or end of F&W and it was PACKED at every booth. WE skipped most of them that year.
You could also sign up for one of the more formal events. There are many to choose from.
One other thing I'll comment on...well, F&W at night is the least child appropriate location in all the parks. There is lots of alcohol for starters. Last year F&W coinsided withthe close to PI - so maybe that was part of it - but we saw lots of folks dressed like they were at a club, not a family amusement park. High heels, spandex, exposed flesh, body jewelry, leather, gold lame (that's lom-MAY - a gold colored stretchy fabric - I don't know how to add an accent mark to a word here). It was crazy! the other year we went eh attire was not so crazy, but the drunk behavior (and all that entails) was just as obvious. I'm no prude, and there were still plenty of families there, but it's just not quite what you normally see in WDW.
