Originally Posted by
PopPhan
The 'IAS' rides should be booked at 7am, otherwise you may not get them at all. You should also book your first 'Lightning Lane' attraction at that time, so that you can get another right around park opening.
Note what 1DisneyNut added - 3 rides have been taken off of the 'IAS' list, at least for the early part of the summer. I would assume this is to handle the higher crowds for Spring Break and early Summer (late-Spring?)
To be completely honest, I did not use Genie+ or purchase ANY 'IAS' rides on my January visit. I was able to hit those attractions early using the 30 minute 'Morning Magic' time allotment due to staying 'on property.' StandBy queues do get busier as the day goes on, so maybe Genie+ is the way to go.