So I hit Honored rep this week which allowed me to purchase [Invitation: Choofa]. Item says “Use: Permanently add Choofa to your Ember Court guest list, allowing you to earn his RSVP.” He didn’t appear on my guest list so I started spending infused rubies to change my guest list to make him appear but no luck. I think I spent more than 100 rubies (8 rubies allow to change 1 guest). Is this really bad RNG or I’m missing something, is it bugged?
FYI: [Be Our Guest] is an Ember Court achievement which is an achievement you need to do to get meta achievement [Back From Beyond] which gives you Veilstrider title. Achievement will be unobtainable when DF launches. I’m already stressed out with Necrolord One (see my other post Abominable Lives quest (Stitching Yard) rant ) now I’m having trouble finishing my last guest because Choofa doesn’t appear on my guest list. At this point my hatred towards devs is increasing to maximum lvl 
UPDATE:
Finally after spending ton of infused rubies Choofa popped up, guess it was really bad RNG. I don’t know if it wil help but I used to change all 4 different guests at start by clicking each of them at start but it didn’t give me good results. So this time what I did was just clicked only on 1 portrait of guest until Choofa showed up, I hope this helps for ppl who struggling with RNG.