we camped on Arran getting the train from glasgow to ardrossan harbour then ferry to broderick.
the ferry was a 5 day saver
Ive hee haw idea how much it was as i skipped the train
I dont think theres an actual day trip, £6.85 for the train,
single is £5.25, saver is 8.95 for the ferry
ferry info is
here which gives you times of the trains and ferrys to all the places cal mac operate