Hi maggie1,
Thanks for reading the Unofficial Guide!
MsKay is correct - the "standby" line is the regular "wait in line" line. Thanks very much, MsKay.
As for why we recommend not using FASTPASS, there are a couple of likely reasons. One is that your FASTPASS return windows are likely to be valid about the time you're leaving Fantasyland. Therefore, using FASTPASS might require you to walk back to Fantasyland from somewhere else in the park. Lots of folks don't like to do that. Our touring plan computer software has rules built into it that try to minimize the amount of backtracking that you have to do in the park, and this is probably an instance of that rule coming in to play.
A second reason would be that for the first hour the park is open, the wait times at the Fantasyland FASTPASS attractions are not likely to be high enough to warrant using FASTPASS. A good rule of thumb is that if you can't save 30 minutes of standing in line using FASTPASS, it's probably not worthwhile (again, primarily because of the backtracking).
The third reason I can think of is that the computer software does not recommending FASTPASS because it thinks your limited supply of FASTPASSes is better spent elsewhere. If we recommend getting a FASTPASS in the late morning somewhere else, it's probably true that the computer software thinks you can save more time standing in line there than in Fantasyland. Put another way, you'll save more time standing in line by using a FASTPASS at Splash Mountain at noon than at Fantasyland at 9 am. The touring plan computer software is probably recognizing this and making the appropriate recommendation.
Hope this helps. Let me know if you have any other questions. Thanks again for reading the Guide!
Sincerely,
Len Testa
[edit: typos]