Yes, i just checked the their website, under product disclosure;

Government Service
Tax
 Principal : RM100 (for 2 principal cards)
 Supplementary : RM50 (each supplementary card)
Note: Service tax will be charged to your Card Account at the time when the card is issued, on
the anniversary date or upon renewal.


Too bad, i just want to apply for platinum one. looks like need to rethink again.

Can we cancel any one of the card?

You can check from the link :

http://www.maybank2u.com.my/WebBank/M2CardsPDS.pdf

This is very new, updated today 9th July 2014