Thanks for that sea-angel!

MrLapLap has nothing against the bus, so long as it is running that Sunday (and the timetable says it does) this would be the preferred option.

He'll be too late for the Inverkeithing to EDI bus departing at 9:28 but it seems reasonable to expect him to get on the 9:58 bus (arriving at EDI 10:24).

We have a plan!

Thank you to everyone who has contributed. MrLapLap gets to rest this Saturday but his work schedule is relentless until late October so the extra time in bed means a lot to us. I'm very grateful to everyone who has helped me figure out all the options. As is so often the case with Flyertalk, the best answer was to a question I hadn't thought to ask.

You are all wonderful! Again, thanks so much!