They roamed around, frequently changing their splendid attire. Eventually, the weariness caused by all this joy took hold, oh gentlemen.

This couplet paints a picture of someone who has been busy, perhaps traveling or attending many events, frequently changing into their best clothes. Despite these activities being enjoyable or signifying a good life, a unique kind of weariness sets in – the "tiredness of joy." It suggests that even pursuits that bring happiness or a life of comfort can eventually lead to a gentle exhaustion. It's a sweet paradox, highlighting that even good times can be tiring, but it's a pleasant kind of fatigue.