Newspaper reports of the time don't really indicate anything untoward as the regiment went about its business of occasional manoeuvres and officers mess socialising. In Sep 1876 a lady(?) called Ann Marr was sentenced to 14 days imprisonment for aiding Private Sinclair of the 5th Lancers to desert. That would give a reason for that offence at least! In that same year, the regiment decided to form a circus, based on riding, as a way of improving the fitness of the men, that may not have appealed.
maxD