I just had my 2010 in at 31400 for the premium maintenance, everything checked out and as far as fluid changes, Service Manager told me everything checked fine yet (the fluids used now days are designed for longer life) Would suggest checking all again at 45000. They did do a complete brake flush due to the color of the brake fluid, oil change, cabin filter,etc. Also did a front end alignment as it was off. (Noticed the difference immediately on the road.) Complete service cost me $444.00. Brake linings checked good, will re-evaluate with next oil change.
I also have not purchased an extended warranty. Came close last summer (factory warranty was up in June) but, @ $2200.00 for an 8 year warranty, I decided I'd take my chances. I do keep up with regular maintenance on my Armada. I haven't had an extended warranty on any of my last three vehicles. Purely a matter of choice. Other guys here on CA have had them and were thankful for the coverage as it paid for itself. I don't do any towing or serious off roading, so, I figure I'm pretty safe.