Ab Antiquo

The Allurists Guild informs you that business near Gum and 33rd has been slow lately. Persuade 3 prestigious vampires (with at least 500 blood) to visit Abbot's Tavern there and tell the bartender "Darkheart sent me". You have ten days.

Can I get a little help on this? Please and thank you!

The barman says "Excellent."
A shadowy figure in the corner nods and makes a note x2.

Completed, thank you!