We book our 3 FP+ early. I think last time just after rope drop we walked straight to Safari, rode it, then got off and rode it again with our FP+. Seems like by the time we got off to ride it again, the line was 30 minutes. I think it depends on what you want FP+ for at AK. For us- all we care about is Safari and Everest. In fact our 3rd has always just gone to waste as we never bother with it. We've never needed it for anything else. In addition to just typically booking our FP+ early at the parks to keep the possibility of using a 4th, DD (9) has gotten bored with AK pretty fast since she was 2 years old. We usually get there- do everything we want (or she and DH want basically- I would go slower through AK but they start whining), and then hop somewhere else. We don't want the FP+ scheduled too late and be stuck there waiting for one to kick in. I will say that since they started the Wilderness Explorer book with sticker badges, she has been more interested in AK which I have enjoyed since I like AK (except last fall it was a construction mess)...but, over our last 2 trips she has now totally completed the book, so unless she decides to start over this year, I think my longer time in AK is probably done for.