Had a go at this with @Brave and @Gordon. Once past the atrocity that is the Fortnite interface and into the game it’s really rather good. It’s co-op survival with a nice progression through materials and build options etc. Lots of interesting exploration things too, and hints at what you will be able to unlock further down the line in ruins you find.
One really nice aspect is that you can create a world and give out keys to friends, so they can go into the world when you aren’t about.
Just as a general indicator @Gordon left at about 11pm-ish and @Brave and I were planning on a short foray into a cave to try and get some better wood then call it a night. I got to bed at about 1:30am 😃.