Maintenance
I do my own oil & filter changes - and will replace air cleaners, in-cabin air filters, etc., etc. myself. I generally avoid using the dealer for anything other than warranty work or something else that I might not trust to an 'independent' place. I can do an oil change with Mobil-1 synthetic for less than a shop charges for doing it with mineral oil.
Since I leased my 4Runner for 36 months, I probably won't need anything other than basic fluid & filter changes during my tenure with this truck. Oh, and I do indeed keep all of my receipts!
For my 6,000-mile tire rotations, I will use Wal-Mart. They only charge $6 for a front-to-rear swap; hard to touch that anywhere else and you don't need an appointment.
I used the stealership for my first oil change (which was complimentary), but have done it myself since then. I'll also use the dealer for the annual state inspections - also gratis for those of us who purchased or leased our vehicles there.
Our Toyota dealership has a good service department, but they're quite expensive (in comparision to DIY or places such as Midas, Meineke, All-Tune, etc., etc.) for routine maintenance or repairs. Also, getting an appointment during their available hours is a major pain in the arse if you are like me and happen to work for a living. They are open Saturdays though, which helps a bit.
Whether or not I keep this vehicle after the lease, it is going to run well for a long time after I am through with it.
MERRY CHRISTMAS to all and to all a good day!!