Got mimosas (orange juice + bubbly) on ORD-SFO and SFO-ORD last weekend. The flights were Airbus-operated and probably ex-VX crew, who were happy to offer any drink to any F passenger for a PDB. I overheard some special requests (i.e. something beyond the OJ/water/sparkling wine standard offer) and they were not turned down. That's the great old Virgin training kicking in!