Do the wrinkles go away after a while?

It depends what caused the wrinkles. Most of the wrinkle issued caused by improper installations, to completely get rid of the wrinkles you will need to have your installer to pretty much reinstall the turf by provide solid and secure edging anchors, and stretch the turf correctly and add sufficient infills. If installations not done properly, you might see wrinkles during certain time of the day or during certain month of the year: this is because the turf is moving (expanding and contracting) along with temperature changes. Such movements can be minimized by secured lawn edges, proper stretching and sufficient infills.