I would like to fastpass aladdin show and then go back to disneyland to fastpass space mountain. are the systems linked or not? are there any rides that are not linked to the system?
DCA and DL fast passes are not connected. You can have a FP for both parks at the same time. However, I don't think the show has fastpass, but I could be wrong.
For more information on how best to use FP, see Hydroguy's tips compilation. There are several threads about FP, and they also list all the attractions with FP:
I would like to fastpass aladdin show and then go back to disneyland to fastpass space mountain. are the systems linked or not? are there any rides that are not linked to the system?