It's not good, fact. It is kinda likeable though.
I didn't really enjoy 'A Very Nutty Christmas' but it has its heart in the right place and I came away from viewing it feeling alright about it. Melissa Joan Hart and Barry Watson, despite iffy chemistry, are probably the main reasons for that, Watson in particular. The supports are OK too.
The film does drag in patches and the whole vibe of it feels too clean and too acted out, which is a weird thing to say, granted, but it's just not a film that comes across as natural - every inch of it feels overtly constructed.
Not one I'd personally recommend, though you could do worse.