I just got back from the World and we took the tour on Sunday... we did the Jungle Cruise (skipped line)...and our tour guide had the mic...so instead of the Jungle Cruise skipper talking, she talked. And she told us a list of things to look for in The Haunted Mansion, then we rode the ride... and we got to skip the line by going in the chicken out door... but we did get to go through the stretching room...
It was amazing - you'll love it!
Exactly the way our tour was, a week ago today. We had Matthew as our guide though. We did walk by Pirates and he talked about several elements in there, but we did not go in.
Here's a tip: if you're on the 9:00 or 9:30 tour, and you arrive to the park a little earlier than necessary, go ahead and check in. You may end up on an earlier tour and also helping someone out. We were scheduled on the 9:00, got to park around 8:10 (EMH day, so it was open) checked in around 8:25 or 8:30. We were still in the vicinity of the office when they came out and said hey, we have two people missing from the 8:30, why don't you go on the 8:30 and we'll bump them to the 9:00. Worked out great for all of us I would guess, giving the missing folks a little more time to turn up for their otherwise non-refundable tour! (And saving us from killing another 1/2 hour on Main Street, hehe.) Even if nothing like that happens, it won't hurt to have checked in, and you can still go get a cinnamon roll or whatever you might want to do on Main St until tour time.
All that said, you might want to still go on Jungle Cruise or Haunted Mansion earlier in your trip anyway. When you ride them during the tour, it will be after revealing some of the secrets. (Funny, even just today I ran across a supposed "secrets" page that incorrectly describes what is happening in the stretching room at Haunted Mansion.) And Jungle Cruise you will not have the standard narration from the skipper. You may want to hear that again before you ride on it with the tour guide (or not; we hadn't been on it this trip, and it didn't lessen the experience).
Definitely make sure you have seen various parts of Main St, Adventureland, Frontierland, Liberty Square and Fantasyland on your current trip before going on the tour. Tour does not really touch on Tomorrowland.
It definitely was a highlight of the trip, would recommend, and would take it again sometime.