Dialog 1 a whole new ball game [ 別の体験、別世界 ]

Angela:Wow, we've never been to Ehime before! What are we going to do?
Yukio:I've reserved a campsite in Omogo Gorge. The next day we'll stay at a hotel in Shikoku Karst. Finally, we'll go skiing and stay the night at Mikawa Ski Resort.
Angela:Great! But how were you able to make these reservations? You don't speak any Japanese.
Yukio:It's a whole new ball game with the Internet. I was able to make reservations and rent a car all online.

Dialog 2 suit yourself [ 好きにすればいい ]

Angela:How do you want to get to Tokyo next month?
Yukio:Let's buy the Seishun Jyuhachi Kippu. It'll be really cheap!
Angela:But we can only use the local trains, so it'll take forever! I'd rather take the bullet train.
Yukio:Alright, suit yourself. You go your way and I'll go mine, and we'll meet up in Tokyo.