Things to do in Rovaniemi/Lapland

[fellatthefirst]

I have booked to go to Rovaniemi in December for 7 days with wife and 2 kids (6 & 4). Could anyone recommend the "must do" things there?

Looking on trip advisor it sugest the top 3 things to do are:

Arktikum museum
Santa Claus Office
Santa Claus Village

I would love to go on a reindeer ride with the kids too so does anyone have any recomendations for this?

[fellatthefirst]

Thanks for all the replies.

I really need to do things that are focussed around the kids for this trip as it is going to be all about them really.