Day use passes are $65/pp and allow unrestricted exit and reentry for the entire day (8am-9pm) The spa also offers discounted twilight hours from 6-9pm from $45/pp Explore the link for more information on massage, facial, and foot treatments!
Rush Creek is a 5 min drive from Yosemite NP's west entrance and a 45 min drive down to the valley. If you would like some recommendations for a day trip, visit the link below. They did a good job of highlighting must sees in the valley. https://www.walkmyworld.com/posts/one-day-yosemite-itinerary