[quote=@Lonewolf685]
This isn't relevant yet, but will this start after the Servants are summoned, or does that get RPed out?
[/quote]

Your first Master-post should be the summoning of the Servant. 

I mean, you could always walk around in Fuyuki for a few posts without summoning your Servant, but that's basically screaming "hey someone who's summoned their Servant please come kill me".