Hi I'm vin working here in Qatar,I'm planning to visit hongkong and Macau.

Presumably my ticket is from Qatar via hongkong and then to manila.what should I do with my ticket upon arrival because I want to consume the required visa for Filipinos.is it possible for me to revoke my ticket and buy another one going to manila if ever I will be in Macau? Will there be any problem going back to Qatar?tnx.