Walk forward to Chikorita and Buneary. Walk to the blue dot on the map. There you will find Bulbasaur. He will let you play the Meadow Zone Attraction, Daring Dash. You can play as Pikachu or as the friends you make. Bulbasaur gives you a Prism Piece for winning. Treecko and Mankey take Chikorita away. Walk north to the bridge. Treecko says that he will let you pass the bridge if Turtwig gets the bonus on Daring Dash. Walk back to Bulbasaur and Buneary. You will find Turtwig to the southeast. Talk to him and win a game of chase to become friends. Talk to Bulbasaur and play Daring Dash as Turtwig. If you beat 10.50 seconds you get the bonus.
You can now pass the bridge Treecko was blocking. To the east is a post. Inspect it to unlock a Drifblim Stop Post. You will now be able to use Drifblim to fly back here whenever you want, which will come in handy later. Mankey is at the second bridge and he challenges you to a battle. You must drain his HP before time runs out or else you lose. You can use Thunderbolt to stun him and drain HP or dash into him to drain HP. Double tap left or right to dodge attacks. Mankey's main attack is a dash just like yours. He has two bars of health. After defeating Mankey, finish crossing the bridge and take a left. Walk along the path until you meet Croagunk. He asks for 200 berries to pass through the gate. Luckily, you should have over 200 already. If you don't for some reason just find a pokemon and become friends with it. Croagunk will give you some berries back after you pay him. Walk through the gate and forward until you find Venusaur. He says you need to beat Croagunk and Spearow in their skill games before playing his Attraction.
Walk back through the gate and talk to Croagunk for a battle. Croagunk has an attack that spews a poison ball at you that is easily dodged. He has two bars of health. After beating him, walk south across the two bridges and west to find Spearow by the obstacle course. Spearow's skill game is Obstacle Hop. You have 99 seconds to get to Spearow. This is plenty of time but the game's controls are not great so it can be difficult. it is easiest if you only walk straight and don't press left or right. Remember to use B to center the camera behind Pikachu to line up your jumps. You can get one-hundred berries at the top of the obstacle course's building if you want. Go back to Venusaur once Croagunk and Spearow are you friends. He will let you play his Attraction, Venusaur's Vine Swing. Use Mankey because you have him as a friend and he is skilled in this game. After you win, head to the Meeting Place. The gate to the Meeting Place is at the north end of the Meadow Zone. Starly will tell you how to look through Pikachu's eyes. Press B while pointing your Wii Remote at your screen. Walk through the gate to enter the Meeting Place.