How many mating can I expect from a typical fiber connector?
It highly depends on the cleanness of the environment and the care on the connectors during usage. Clean the connector face with a connector cleaner before each mating. Avoid dust and moisture. Do not touch the ferrule face with fingers. With good care a connector can be mated 50-100 times before any need of re-polishing. One can only re-polish a connector a few times until the ferrule becomes too short.