No, you should be able to FPs for everything until at least 1-2PM (maybe as late as 4-5PM for the big three - Indy/Space/Splash), although like WDW the later in the day you get them the later in the evening the one-hour return windows. BTMRR FPs at DL are less popular than at MK and you can get them up until 10PM at night with short return windows. You can get Buzz FPs until at least 8-9PM, and RR FPs anytime as they are not connected to the FP network.