This may be off-topic, but I'm not altogether partial to the abbreviation acronym "VMX" for this particular Muppet production.
First of all, "VMX" sounds like it's the name of a bicycle or motorcycle brand.
Secondly, it omits one of the two middle "M"'s.
VMX = Very Merry Christmas, or
VMX = Very Muppet Christmas.
If we're going to limit Muppet production abbreviation acronyms to four letters at the most, i.e.: TMTM, The Muppets Take Manhattan; then it should be "VMMC" or "VMMX" for Very Merry Muppet Christmas, depending on whether you're the type of person who represents Christmas with a "C" for the word "Christmas" or an "X" for the "Christ"-part of Christmas.
Personally, I'd go with VMMCM for Very Merry Muppet Christmas Movie, but I can live with VMMC just as well.