Does the Keenz 7S come with a snack tray?

No, the 7S does not come standard with a snack/activity tray. An optional [2-in-1 Snack Tray & Cup Holder][1] can be purchased separately. [1]: https://keenz.us/collections/7s-original-2-passenger/products/keenz-7s-2in1-snack-cup-holder

7S 2-Passenger Ultimate Adventure Wagon