Another important thing to remember. EMACS that does the upgrade at DXB does not always do what they supposed to do. Empty First and/or Business needs to be upgraded to make space for up-gradable staff as the ticket is revenue for the company. I had numerous occasions where First-class had empty seats and business was full. They forgot to upgrade to make space for me in business. You need to be on-top of the staff at checking with FABS and point out these things. Leaving it to late will result in not enough time for additional First-class meals to be loaded for the upgrade from Business to first.