Personally, I think it is up to the individual churches, or their respective organizations, to decide if they have a Christmas service on Sunday or not. What troubles me are the Christians who are not members of these churches condemning their decisions. It's in the same class of arguements that one denomination has against another. Disgusting. People need to keept their own church and not dictate the business of another.
>>People need to keept their own church and not dictate the business of another.<<
I'm sure the Corinthian church said the same thing before they got Paul's first letter, addressed solely to them and how they had gone astray.
Rebuking, exhortation, and encouraging sound teaching is part of a Christian's responsibility towards fellow professed believers. We are as accountable to each other as we are to ourselves - especially in the case where a church body chooses to satisfy man's "hectic holiday schedule" rather than glorifying God corporately on His day.