Well if they know their friend is the kind of person that likes to have a guide, then this problem is obviated. Some people like to have a road map some like to find their own way there.
The only thing I can't stand is when the game guide is less of a map and more of a GPS that tells you to turn left over an embankment and into a river... That isn't the case here thankfully, but you'll still be using the wiki plenty.
I guess I never thought about the fact a guide might be really nice for console players though, on a PC I can alt-tab to the wiki if I need, on a console having a book in my lap, even if it is a flawed guide, would be better than none.
Well yeah, I like to check on youtube for spoilers and where to find unique weapons, but in my opinion it just destroys the whole feeling of finding it yourself, because usually how it goes on youtube is you search for good unique weapons and it shows what they do and then you see where they are and you just go "aw man I gotta have that!!" so then you go out of your way to find it just to find a weapon that you realize is just like the Experimental MIRV from Fallout 3, either useful or something almost useless with extremely limited ammunition. When, what you could do is just play it and explore to see what's out in entire game and the experience completely changes.
I'm saying it makes the game better to have an up close and personaly experience to just look and see for yourself instead of having a map that tells you where everything is (guide and wiki alike), because if you go through some kind of tripped and trapped house full of mines and rigged shotguns and have a guide to tell you where they all are so you don't even have to take your time with it is so much less satisfying than triggering the trap and having no idea about it then learning from it to find another one that you trip, and the process continues like that until you find what was waiting at the end of that dreadful room which the guide/wiki would have just given away.
It's Fallout. It wasn't meant to have a map.