This is the first time I am going to be sitting in first on this aircraft. I am currently in 1A. I have options to move to the C and D seats. I assume the tray table for 1A is in the seat rest. Is this true of all of first class? I can take 1C or 3C or 4C. Would they be more comfortable? I don't really want to be in the D seats as prefer aisle access. All the other A seats are taken. Appreciate any tips. Thanks!