As you enter the town you'll see a river not far left from the path, along the river it is like a mini forest just going along and closer to the river is mud and wet grass. Right from the gravel path you enter on is a large wooden fence of 5 meters, no one knows what goes on there. But rumours say it is a large research lab, though no one knows how to get in. People who have jumped the fence have been shoot right back over. Getting back to the river, you will not have any sort of fishing rod to fish with, though the water starts of really low so you could just walk in it until it gets too deep.
It is however safe to swim in and try and catch some pokemon, though they do come on the land and some live in the tress. And for those lazy people, yes some pokemon run up to you on the gravel path.
You can easily find many trainer to battle as well. After about 2 days of walking the river will disappear and the fence is still there but isn’t out as wide, the river is replace by rocks and some trees, and after another day the path will change and go diagonally left instead of straight and the fence will eventually get further away. Eventually the place will turn into a town with many people greeting you, the town is colourful and everyone there is happy to greet people. There is heaps of poster advertising the contest, the town is wider than it is long so you will not be in there that long if you follow the signs.
Types of pokemon you'll be likely to find are (in no order),

and

and possibly pokemon with the extra type

! Sometime though

types may glide to meet you, and possibly not in a nice way!