Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
I didn't touch them so looking at it it's 1/8192 or ~0.012% by default.
I did make the Shiny Charm easily obtainable in the second city though.
Edit: Alright, i looked directly at the game to make sure and it seems that i answered wrong and forgot that i did indeed touch it when i was making...
There's an EXP. Share in the upper right corner of the graveyard to grind levels more easily.
There's an eviolite in the same room as the first gym leader which should also come in handy.
The berries in Ile-des-Rois can come in handy, though i guess they're finite in mumbers.
Or you can use...
I'll look up the fossil restorer. as for what to do, head north to the magician house on route 4 and talk to the girl on the sofa inside, she gives you a spell to move the boulder.
That house
Mostly, as a matter of fact if you don't care about sidequests then the game might as well be completed.
There's just not much to do outside the storyline and 95% of houses are locked.