Just finished running the blue flame marathon: start from scratch (I did it in Master mode cos that's what I play in usually) and go to Kakariko and see Impa, go to Hateno and get the director to ask you to fetch the blue flame, make it to the blue flame in Akkala and bring it back on foot. You can use any suit you want, including the Majora's mask. Once you've lit the Hateno furnace, time to talk to Robbie and then head back to the Hateno flame source and take it all the way to Akkala lab. Good luck with the weather, you're going to discover there are some weird borders between weather systems, especially at the turn off to Akkala from the road coming up from Lanayru. There's a bit where it rains all the time (unless you do the Zora quest). Took me a few days to get lucky enough to make it!
And then I did the long distance carry, taking the flame from Akkala to the fairy fountain in the Gerudo desert, just for the hell of it. Did it on horseback though, just to make a change (and it goes a lot faster of course).
Someone quite a few pages back mentioned a diamond under a rock on Mount Satori, anyone got a more precise indication of where that is please?