[quote=@ihinka]
[@Guardian Angel Haruki] So if it takes our full turn to tie the bandit, that means action, bonus action, movement. If I wanted to say something to the bandits, is that allowed?
[/quote]

I consider saying something to the bandits a free action (as long as it's not a spell or speech), so you can do that. 
I would say to finish tying up this bandit quickly and be able to fight next time, it'll take a full round. But you do have advantage thanks to Shaedra.

[quote=@Cu Chulainn]
[@Guardian Angel Haruki]

Any of these banditos trigger Mirdas's Opportunity Attack? o.o
[/quote]

I would say that you would have an Opportunity attack on Chorus and Lorus (the bandits attacking Jacoby and Bobbin)