It's always wise to audit any claimed dealer services. In my case, I met the conditions to justify the "Severe Operating Conditions" schedule in the manual and requested the designated services via voicemail to the Service Writer, dealer appointment form online, and affirmed again live (being paranoid).
The paranoia paid off once I caught the dealer red handed NOT performing claimed work at AutoNation South Austin Toyota under Toyota Care. The ONLY item on the maintenance checklist completed was a basic oil change. All zerk fittings were dry and untouched - no lubrication service occurred at all. And forget about them re-torquing of the prop shaft and body bolts to spec per the checklist. And last, they lost front skidplate bolts during the oil change which I caught and made them replace. Luckily I crawl under the truck to do an onsite inspection knowing I am dealing with inept and/or untrustworthy people. Be careful out there folks, nobody cares about your truck like you do. Dealerships get paid to get it done fast, not 'right'.