1. You can change the screen orientation by rotating your device on the menu screen. Orientation is locked during gameplay (this is because DUN DUN DUN... I didn't plan ahead! it was a last minute addition). If you use landscape orientation in 2-player mode you can sit next to each other instead of facing each other.
2. If you get a new high score while offline, you can submit it to Game Centre later (when you are online obv) by tapping in the "high score/flowers gathered" box above the main menu.