You have to love it.
I still haven't had a look at that quest chain involving that free premium day until now when I was able to acquire 3 The Nords adventures. So I trained the troops and gave it a try yesterday. The premium just expired, but what a thrill: Within the same day I played 3x The Nords, 1x Roaring Bull, 1x Isle of the Pirates and 1x Old Friends. I swapped the roaring bull spots within guild for 1x Black Knights and 1x Roaring Bull - That's 8 adventures within 24 hours.
Especially the expiry was thrilling - will I get this adventure done in time or not? In the end I was only 5 minutes away from expiry when I finished that Old Friends adventure. The only offside I felt was that I had to build something to see the exact time left.
I got lucky, too, the loots were consistently high value:
And now - I earned 150.000 XP, tons of granite and steel swords. Thanks so much for that experience, I had great fun.