bwahaha, I havent actually quite set reminders for overnight yet (though I wouldn't be surprised if I did at some stage).
I have just been breeding Blazings and Fogs overnight recently to get me a million for each the next day but not to have to worry about wasting precious 'free cave' breeding time instead. I then start my Airs again as soon I wake up. I'll admit I have been frustrated if I AM up in the middle of the night though because I know I could be making even more coin if I hadn't chosen the 8 hour breeders, haha.
I was having a few really bad night's, sleep-wise, with being up for hours with my son but I was pretty happy with the game play I got done and the coin I managed to collect, hehe. It's only been the last two nights (since my son has been sleeping through) that I've got the dreaded "and others" gem notification too!! What's that all about? Methinks Backflip likes turning us into sleep deprived, crippled addicts!! It's certainly the way the game is designed/updated (wasted coin/not getting gem notifications if you sleep too much and frustrating zoom issues making the rearrangement of islands a much more painful and frustrating experience, ahaha

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Aah it's so nice to feel at home with my fellow addicts anyway