NAVARONE IN BEST PO- No wait, crap, he'd kill me if I said that... Bollocks. Still, Diaries of a Madman has got to be the greatest fanfic of any series ever. (please tell me that's what you're referencing, right?)
Given it's night though wouldn't the Lunar guards be on duty? You'd think they'd all be in the bar during the day and it would be a bunch of the solar guards there at night. hehe. Either way amazing drawing!
You should try another version of this, only with the original suites. I'm of course referring to to Swords (modern equivalent is Spades), Wands (modern equivelant is clubs), Cups (modern equivalent is hearts), and coins (modern equivalent is diamonds). It would fit more with the mystical feel that MLP provides, and it probably fit more with the characters.