Only the people who have excursions booked will be on the first tender, the rest usually have to get a tender ticket, which is first come, first serve. I'd suggest you just get to the area onboard where they are passing out the numbers and get one early, good luck!
Booking a suite won't help. It is first those that hold excursion tickets and then after they are handled it is first come first served and you usually pick up a number in the lounge. Take a number and wait for it to be called.