Rob at headforpoints wrote an article on this a few weeks ago. Finally I got around to enrol hubby in avolta, matched to platinum (using hubby's hilton gold), then use avolta platinum to upgrade to radisson vip until Dec 2025. All done in one day, we are now back in Oz and hubby got radisson premium through amex plat. We are going to take advantage of radisson vip in 2025 - in a few countries like mauritius, madagascar, and norway - free breakfast for 2