Welcome to FT!

Since you've already bought the tickets, you know what airline they're on. FT is organized into forums for each airline (plus lots of other topics, most of them travel-related), since that's the only way to keep something of its size out of total chaos. Go to that forum and spend a bit of time reading it. There are probably one or more "sticky" threads at the top that answer many common questions, including perhaps yours. Once you've done that much, post specific questions about that airline in that forum. That's where the FTers who really know that airline's program hang out.