Schedule of the mtr from the Chek Lap Kok Airport to Panda Hotel, Hong Kong?

Hi,do you have any idea on the schedule of the mtr from the Chek Lap Kok Airport to Panda Hotel located in Tsuen Wan because my arrival will be on May 07,2012 at 12:50 am. How much would be the fare?I will be also staying in Hong Kong for 5 days and is it really necessary for me to get the octopus card since mtr primarily will be my means of transportation in visiting places?Thanks a lot and have a great day. :)