Kinda. Once you beat the Elite 4, your dad will be at your house. He gives you a ticket and if you go to the 'Ferry places' in Slateport and Lilycove, you can go to the battle tower. It is both fun and supremely hard.
Lavaridge Town.
Lavaridge Town.
it is not in a town it is next to Lilycove
Dewford town.
Rustboro.
In the lavaridge town gym.
play the how else
verdanturf town
There's NO GYM in Oldale Town!
in fallarbor town but in Pokemon ruby and Sapphire
when your Pokemon likes you.
In Pokemon Sapphire, the only egg you get from an NPC is the Wynaut Egg from the old lady in Lavaridge Town. You can get an egg from any Pokemon that can breed, as with any other Pokemon game that has the Day Care that allows you to leave two Pokemon there. You can breed any Pokemon that can breed with Ditto (except for another Ditto), which can be caught in Pokemon FireRed and LeafGreen and traded to Sapphire.