Great round of posts, everyone! Should be an interesting troupe of characters to get to know.
As to when to post next, Dragon-soul - if you've got something to add (interaction with another player, expanding on what you've already posted, etc) you're probably okay to post up again, whenever you like. If, on the other hand, you're waiting to see what happens with the guards before continuing on with your characters thoughts/actions, you just need to wait for Giddy to post his next update and see where it goes from there.
In the area you write for your replies/messages/etc, check out the format bar at the top of your message area. All the way to the right there is a smiley face. All of the emojis are there. You can choose from a list of animated ones or otherwise.