Hi FSUnole03 and jrkmsp
Thank you so much for taking your time out to spread some knowledge and opinion! I shall have a ganders nearer the date. I'm thinking of having my parents use the Dublin flights when they come to visit us in Boston (it is much easier for them to get to Dublin from where they live in the UK than to London).
Slightly off-topic, but how long is the walk from the Terminal A main building to the Terminal A satellite building? I believe it is via an underground walkway.