In the Agility Guide, the Agility Pyramid has its own section, however it simply recommends bringing waterskins and food.

I think it would be a good amendment to recommend being on the Lunar Spellbook.

On the Lunar Spellbook, with 68 Magic, you can cast humidify!

I would recommend bringing 4-8 waterskins (I bring 7, because it is aesthetically pleasing). From there, you can cast Humidify when you're running low on water. With full desert robes, even with an inventory full of food, the 1000gp prize for the Pyramids easily makes up the cost of the runes required to cast humidify!

That or use that enchanted water tiara ;) Both should be added to guide, I say!

 

However I wouldn't recommend taking too many skins, you'll want inventory for food/energy potions. <3

Thanks, you two. :)

 

I've added the information to the Agility Pyramid section, and you've both been credited.