Three businesses have committed to leasing space in Rubicon Realty Group center The Shops at Pebble Creek at 7022 Hwy. 6, Missouri City. The center's sales agent, Edward Le, said Billy's Donuts was close to opening. Meanwhile, the Tropical Smoothie Cafe is in the permitting process and is expected to open in May. In addition, Smiles of Riverstone plans to relocate there in early summer from its location at 4706 Riverstone Blvd., Ste. 100, Missouri City.