The advent medal is behind one of the days ... but it is not the only medal ... and there is something new which you will find out about on the 5th.
so it is worth requesting every day ... plus you get the bonus points for posting every day!!
I think she meant more like "you have to take part in 5 events to get the Christmas 2018 medal"... does Advent count as one event no matter how many days you participate, or does day 1 count as an event and day 2 counts as event, etc?