consider yourself lucky I'm not an instrumentalist or a music maker ;-)
My reference to homework was to make clear I need to refresh my memory in preparation of the concert as it has been a while that I listened to it.
My presence is purely as audience, come to think of it; I suspect the orchestra members have been rehearsing for a while now, there are three performances of Mahler 3rd this week and rehearsing can take quite some time (women choir, children's choir, full orchestra with additional players).
I suspect it'll be great, the RCO has Mahler in its DNA through a long history and direct involvement with the composer. I count myself lucky for that and the concert hall they perform in!