Hey! First timers staying at the Marriott Casa Magna Easter week, and we've gathered the busses (along with everything else) will be very busy. Still, if we take the bus downtown from the Marina area (by our hotel), how often do the busses run? Will the "centro" bus take us all the way in or do we have to make any bus changes en route? On the way back, will the bus be marked as going to the Marina area? Also, how often does the bus from the southside terminal leave for El Tuito? What about the return trip? Thanks!