Is a rear tether strap required?

Hi Briget, Thank you for your enquiry. Regarding the tether strap, Evenflo strongly recommends using the top anchorage (tether) strap when using this seat with the internal harness. Car installation is free at our Baby OnThe Move stores when a restraint is purchased with us instore or online. Please note that Installation fees are at the franchisees/stores discretion when a customer has requested to price match or is looking to install a seat purchased elsewhere. We always recommend contacting your nearest store to assist with first time installation in your vehicle once a restraint has been purchased. If you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder where you can find contact details for your nearest Baby On The Move Store. If you contact them direct, one of our expert Car Restraint Technicians can assist in helping you with finding the right car seat for you and your child and assist with installation. We hope this has helped with your query.