USCG GPS course....anyone taken it?

Anyone taken this course in the past? Thoughts?
Wondering if it’s worth cashing in some chips to use a full weekend day and leave the wife with the kids?

GPS for Mariners
U.S. Coast Guard Auxiliary Flotilla 12-8 will hold a GPS for Mariners course from 9 a.m.-4 p.m. Feb. 21 at Coast Guard Station Charleston on Tradd Street. The cost is $45

2014 Key West 203DFS
1987 Landau