@bigrig: I apologize, I misread your post, you meant that there was no specific rule to even override the general one. I read that as you saying that specific rules do not normally override general rules when they conflict. At the time I had not even formed a solid opinion one way or the other I just didn't agree with your argument... but then I didn't read it right either <sigh> *deletes needless paragraphs*
Now as to the actual rule and how it works. So far as I can tell I agree with everything Tyrannon said here:
"This rest is treated as 8 hours of sleep for suchabilities. This rest doesn't refresh uses of mythic power
or any mythic abilities that are limited to a number of
times per day."
In bold. Now, (to play devil's advocate), it does say it counts as 8 hours. Therefore, would that not mean, that since it
counts as counts as 8 hours, it overcomes the "You cannot regain spells you have cast within the last 8 hours."
If so, then the mythic point rest/ recovery counting as 8 hours of rest also clears as it would, by default rest rules
(correct me if I am wrong Rynjin [you do know your rules mate]) the 8 hour recent casting limit?
In italics: This, by RAI (to me only), seems to outline the limitation of the rest. Using my brain to make my mind up &
reading comprehension to understand the intent, this gives the guidelines on what is not covered. Which is anything based off
of Mythic power. Therefore, to me, it would potentially allow the recent casting limit to be overcome.
So to my mind the only real question is was it the intent to allow spell casters to overcome the spells per day barrier or not. That I'm less then certain of. I suspect that by RAW probably not but by RAI maybe. For me I'll probably allow it with my normal caveat which is that you can't sleep when you just aren't tired :)
Consequently, blowing your spells and trying to go back to bed an hour after you got up simply won't work. But that houserules territory so I won't bother going any further into that. I've most been following this thread because I have a group that is mythic tier 2 and wanted to have this fully thought out before they hit tier 3 :)