Playing in hardcore mode and I highly recommend it. There are plenty of vendors selling water, prickly pear fruits to harvest for water, animals to kill and grill for food, places to sleep etc., but it really makes this feel more in depth as an rpg. Also, Caravan rocks for making lots of caps once you figure it out -- really helping me stay alive as I need to buy up all the stims/ammo/water/doctor's bags I find.
Give hardcore a shot -- I think some of you might like it.
What is "Caravan"?