Certainly fitting boots by mail is a daunting proposition.  you hav my sympathies.  However, the stores will open, perhaps earlier than full retail to accept returns. Many retailers do not have a comprehensive a return policy as REI.  Paradoxically, I have had to return only one item in fifty-six years of membership

Superusers do not speak on behalf of REI and may have received
one or more gifts or other benefits from the co-op.