I have 2 points:
1. Sunlight at 5pm is as burning as 4pm. I think we should decide either play before or after dinner. If before dinner, 4 pm is better; if after, I like 7 pm (some friends come a long way to play, if we finish at 9pm, it would not be too late for them)
2. Mark has a great idea of bring 2 shirts, 1 dark 1 light. I support it.
Please comment.