I'm flying MLE-DOH-PHL soon in Biz class on an I fare basis. My flight departs MLE at 23:20 with a roughly 5.5 hour connection at DOH. I'll be arriving at MLE by seaplane around 18:00 and really would prefer to get on one of the earlier MLE-DOH flights, shortening my time at MLE and increasing the layover at DOH. The flight at 20:05 looks wide open in Biz class based on EF numbers and the seatmap (J9 C9 D9 I9 R9 P9).

Since I'll be at MLE early is there a way to stand by/same day flight change to the earlier flight? Obviously I could just pay the fare difference, but I assume that would be quite a large amount/not worth it.