Yeah, it's really good fun lads. Really, really silly sometimes, but fascinating to see the amount of effort that goes into the shows, and the number of people involved is staggering.
The Hardhome sequences from the other night were filmed in Magheramorne Quarry in County Antrim, which is handy as it is literally 5 minutes from my house, making travelling to the set a bit of a breeze for me last year.

(In fact, if you put 'Magheramorne Quarry' into Google Maps, you can see Castle Black tight in against the quarry cliff face and the Castle walls of King's Landing down at the lake, where the Battle of the Blackwater was filmed years ago. That is also the lake where the Hardhome camp was set up and all that was filmed for the last episode of GoT. The bits on the rowing boats an' all was done in the lake.
Most of the other extras are brought to the sets from Belfast by coach, and given that we were usually wanted on set for 4am it meant I could get an extra hour in my scratcher over all the other poor buggers.
People travel from all over to 'extra' on the show. There were a load of guys over from England and Scotland, and a few over from America and Canada. Crazy. I travel 5 minutes, they travelled halfway round the world!
One lad I got to know was traveling up from Cork by bus, which was taking him seven and a half hours! He ended up kipping in my spare room, cos by the time he'd paid bus fares and for hotel rooms, it was actually costing him money to take part.
They're currently starting to film Season 6 and if I get back in for this one, this'll be my 5th year as an extra on the show. I've been one of Robb Stark's Bannermen, a Grey Bannerman at the Red Wedding, One of Locke's henchmen working for Roose Bolton when Jaime Lannister got his hand chopped off and was brought to Harrenhal, one of Stannis' soldiers and last year, a Wildling, doing Wildling sh1t.
Hoping to maybe get into the Night's Watch this year, but I'll have to wait and see....
It's just about the only time in my life that being a long-haired beardy-bo11ocks has been advantageous to me!