Heck, if HA knew for certain it was a workday, it could boot the laptop for me…hmmm. Maybe something to think about for the future.
I’ve been meaning to look into how to integrate HA with a NextCloud CalDAV server or something, because I have a lot of ideas for automations that would be best triggered by calendar events (e.g. ringing an alarm [get ready time] + [travel time] before [appointment]).
Don’t forget to think about how to keep the salt air from corroding the electronics. Either build a spare or two that you keep sealed in plastic, or find an airtight case with an integrated heat sink or something.
Edit: you might want to look into conformal coating and dielectric grease (for the connectors) as well, although I don’t know enough about that to competently give advice beyond the mere suggestion.