I am on LH413 from EWR to MUC in 2 wks in P class. I happened to notice my seat assignment changed. The A359 was changed to an A346. Rows 1 and two are booked in the middle seats and the windows show as blocked (on Expertflyer). I hav eno status on LH and have so far left my M+M number in for ease of accessing the reservation. Is there any advantage to entering a *G frequent flyer number? Are these seats generally accessible just to Senators/Hon or are they available to all at online checkin? Thanks!