I brought my 2017 Sienna in for the recommended 18 month service, and it was a great experience overall. From the easy-to-use online scheduling (with appropriate email and text reminders - nice touch!), to the easy in / easy out, to the faster than promised service, including car wash. What's not to like about this! (I also saw a 2019 Sienna that I want....but that's another story!)
After the service, Jose stepped me through everything that was done, including a review of all items that were checked.
The most complex thing about this visit was figuring out the new coffee machine in the waiting area, and even that was easy to use!