We did that version of "3 Musketeers" in 2018 or so. I got to play like 5 different characters (no real "name" ones - just a host of disposable bad guys, including Richileau's hitman).
The fun thing was learning swordsmanship. We got rapiers and parrying daggers. The first 3 weeks of rehearsal were almost exclusively sword play. You had to get your fights down PERFECT because you couldn't "pull" a sword movement. If it was supposed to be able to hit your partner, it had to be on-line and directly at him. Reason why? If you swung off-line (to the side), the partner had to block wide. As the blocks got bigger and bigger, you increased the chance of a missed block and injury.
I wore volleyball knee pads under my costumes. You can stagger around when you die being shot. When you're stabbed, you pretty much gotta die straight down. Took a toll on my knees.
