The wordplay in each clue leads to the answer and an additional letter
not to be entered into the grid
10d Sauna mostly right to declare "No Alcohol Admitted". Get used to it! (6)
26d Fame achieved in small town after flight from Scotland without second of pilots (7)
41a Harry oddly seemed male Arabic name (6)
The letters I have aren't much use because there are clashes in the grid which have to be rectified...