Santa will be leading the ride [unless it is wet coz we don't want a Soggy Santa], so he hopes that we will have a few Elves and Reindeer turn up. At the very least bikes should be 'tinselled' up and the challenge is to have more fairy lights on the bike than Santa's Little Helper [aka Cranky J].
Nice flat ride of 46k round W Sussex with the usual number of zigs and zags, and a figure of eight as well!
About Sunday morning rides
A pleasant Sunday morning ride, at a modest pace and in good company every other Sunday. Various start points.
This article describes what you should consider bringing with you.