Yes you can make reservation by phone or internet
Technically yes, however I approached a driver at the Airport and was given a seat without a reservation.
It's very good to have a reservation now. Very popular these days!
If you are riding late evening then you should be ok. I travelled at 8.30pm and there were only four people. I hear the mornings are busy.
Yes, although it is a gamble as a walk on
Yes
No, you can purchase your ticket at any of their facilities or from the driver if you are at the airport
No, but it's recommended
No reservations needed.
Thanks! Your answer is awaiting moderation.