As an Retired EA, H&R Block Employee, AARP Tax Aide I can tell you
that any of them should easily be able to file the returns. As the season
for AARP is over for a free return, you could find a Block office open in your local area. As you are sure that refunds will be due you do not have to
worry about penalties. After the April 15th date, my experience is that mostly more experienced Tax Preparers staff the offices so you should OK.
Jim