Hi, I checked via raileurope again and below is my finding which i am getting more confused now:
Screenshot #1 : I entered designation = Le Mont Saint Michel with a date of 3May and it shows “Rail pass doesn’t apply for this trip” and I will have to purchase the ticket (€116 for 4pax).
Screenshot #2 : I entered designation = Pontorson Mont Saint Michel with same date and it shows “Seat reservation is required of €6.80 for 4 pax.
Does this mean that the seat for Bus# 36873 is no longer available for pass holder? Exactly which designation I should input so that I can get close to take the free shuttle bus to Mont Saint Michel?
Really need your adv and suggestion.
Thank you.
Regards.
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Sceenshot #1:

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Sceenshot #2:

Reservations do not exist for the bus but through rail-bus tickets are available for non passholders.
The booking engine is not capable of giving you a reservation for the full journey so it fails and shows the full fare instead.
You should just get the compulsory reservations Paris - Pontorson.