This one is very basic, but this simple trick saved my bacon the other day:
I had a Wwise event that Set a Parameter Value and I couldn’t tell if it was working. So I tacked a Play Event with a very audible sound onto it. Once I triggered the event in-engine and heard my sound I new that the event was playing and that the fault was at my end rather than with my programmer. There a loads of ways to do this but this is easy, quick and reliable. The kind of trick I like!