If you can't find the fruit fresh, I've noticed that many upscale grocery stores sell it in the frozen fruit section. (thefitfork.com)
For the granola, most stores carry dried tropical fruit now, either in the dried fruit section, or sometimes in bulk bins. (theviewfromgreatisland.com)
Frozen acai packets can be found in the frozen fruit section of most grocery stores, if you aren't able to find it, just use more berries! (beyondthebite4life.com)