It depends whether the the party is more important than the date or vice
versa.

For example, for many years, my family celebrated Chapmas (which was held
sometime after Christmas) rather than Christmas itself. We did that because
none of our family are particularly religious and therefore the actual date
of the 25th of December wasn't particularly important, the point of the
excercise for us was the gathering of the family. The fact that my sister's
husband's family, and, at the time, my ex's family considered the date
significant made it easier for us to go do *Christmas* with them, and let us
have Chapmas with our family without the mad rush around and having to eat
two different Christmas meals.

So if the 31st of October is significant to you, then you'd celebrate that
day on the 31st. If the occasion is just a good excuse for a theme party and
the exact date not particularly special, then you'd hold the party whenever
was most convenient.

I can't see a conflict.

Yowie

The people who insist on celebrating a birthday on the right day are
probably not the same people who want to move Halloween. Or if they are,
they don't consider birthdays and Halloween to be of the same degree of
importance.

I tend not to consider exact dates to be terribly important for most
things; but in such matters, I have to remember that several of my closest
relatives consider it of the utmost importance to celebrate all family
birthdays, Christmas, Easter and New Year's Eve on the right days. None of
us get worried at all if someone remembers Halloween or an anniversary on
the wrong day, or even forgets it altogether.

The trick is to remember which days are important to which relatives,
since I don't want to hurt or offend any of them.

--
Cheryl