Hi Mike,
Thank you so much for your reply re: caps on railcards and Oyster super helpful!
I was hesitant to share the whole ordeal since it’s been such a headache for me, but if you’re happy to give it a try this is the current schedule:
2x evenings (arriving at 4:30pm) St. Albans > Wembley Park
2x mornings (arriving at 9am) St. Albans > Southfield
1x full day (arriving at 9am, returning after 8:30pm) St. Albans > Southfield > Wembley Park
Occasional Saturday (arrive at 8:30am) St. Albans > Southfield
Thank you again!