i've been to macau before as a tourist,then i wanted to tour again ,do i need to ask for a supporting letter from a friend there,or i just buy a ticket and fly ,what is the main procedure and all the requirements needed,as i dont have any idea ,if i fly from phils to macau,coz,i've been to hongkong in my last flight to macau,now i dont have idea how to process from here in the philippines