Very astute Father Huxmas, but a couple of glaring examples of his efforts, or intended ones, have been ignored. Of course, there is First Contact Day, which had a valid rationale of commemorating the launch of the Phoenix and the initial contact with the Vulcans. Interestingly, the only time we saw this actual holiday celebrated aboard Voyager was the episode of Neelix's last contact, directly anyway.
Neelix did try to float the idea of instituting the ancient Vulcan holiday of Rumarie, which to everyone's benefit never went anywhere. On the other hand, given his description of it, which made Festival sound like a sedate picnic, it might very well have been stimulating, salaciously if in no other sense.
Neelix also wished Tuvok a happy Kal Rekk season, the holiday of course being but a single day and not particularly appropriate for wishing felicitations, at any rate.Of course, in his continuing quest to earn Tuvok's respect, we have to remember that he seemed partial to Vulacn funeral dirges as well.
Lastly, I can think of one other Voyager reference, this one by Chakotay in Swarm. When their shield modulations have been disrupted by one of the ships, he remarks something along the lines of Voyager now being lit up like a Christmas tree.
The distinction you draw on the context of his meaning is an interesting one. I would veer towards the former interpretation as Paris, on the whole, doesn't come across as someone that would instinctively use literary allusions, aside from the fact that his predominant cultural touchstone is mid-20th century mass media and automobiles. Still, Dickens' legacy would likely still be ubiquitous, so the latter intent is certainly plausible.
