Power for LEGO Creator Expert Roller Coaster (10261) In order to power the Creator Expert Roller Coaster (10261) can the 'Power Up' components Technic XL Motor (88014) and Technic Hub (88012) be substituted for 'Power Functions' components M Motor (8883) and AAA Battery Box (88000) which have both been discontinued?  Thank you for your assistance.
Yes, Powered Up is the replacement for Power Functions. However, Powered Up requires a smart device (smartphone/tablet) to control the hubs.
Used Power Functions parts are also available for sale on sites such as Bricklink, Brick Owl and Ebay.