Nothing, usually. You might, however, come across something called The Berry Glitch that only happens in Ruby and Sapphire. Your berries never grow, and your internal clock freezes. The internal battery will die out shortly after. It will not affect your save file, though.
If maximum time is what you were concerned about, don't worry about it. Maximum time can go up to 999 hours and 59 minutes.
You win a million dollars!
PLAY IT FOR 24 HOURS NONSTOP PLAY IT FOR 24 HOURS NONSTOP
Depending on whether you do quests and such, gameplay can range anywhere from 40-80 as i understand. I personally took ~82 hours, choosing to do as many quest as possible until I got fed up with it and just wanted to beat the game I took about 100 hours doing as many quests and raising my affinity.
you wait till you have played the game for 100 hours
I believe so, but you have to get 5 stars on your trainer card and play a 100 hours to do so.
No it is 100% legal to do.
It may take around 50-100+ hours to complete the main Season Play mode, and even more to complete all the events in the events list for the Solid Gold achievement.
to get the ruby yes you do
There could be if the stone in question weighed 100 carats.
Lv. 100
100 hours is 250% of 40 hours.
oh that's easy! it's something like ...roughly 100 hours of grueling level-crunching and 8 gym leader battles