I don't really encounter many or almost none at all except a few occasions that I do recall fondly.
-Meeting and shaking an "art-house" director/screenplay writer
Mari Okada's hands. Then while freaking out about it, I got a free Sig on a Memorabilia+Wallpaper since I was a huge fan. I've framed them and stored em in my treasured room.
-Meet and greet the Persona 5 VO Cast back in Summer 2017. They also did a nice ad-lib special where they all played their character role on random submitted topics gathered. The room was packed to the brim with fan-girls. RIP eardrums.
-Saw Kenji Inafune during a convention. Asked about his health & MN9(was being promoted @ the time). He assured me the development was going fine & he had to leave for his guest panel asap.
-Got noticed by a very popular JP VA "Yui Horie" during a fan event for the OVA series Kings. She basically picked me for a trivia and we also play rock-paper-scissor for prizes. My 15-mins of fame moment. haha.
-Got to see DQ's creator Yuji Horii @ a DXI demo-station and got a Themed-shirt.
-Participated in a Q&A with the Director of "Corner of this world" from studio Mappa at an exclusive 500-seater private screening. He sadly passed away a year later. I should had took the Sig offer even tho I herd it was a 2-3 hrs waiting line before starting. Feelsbadman. I did frame the give away movie poster as a tribute.
-Met a famous AV actress from JP named "Miyazawa" who was doing a cosplay gig for Square-Enix's star-ocean series. Found out about it after the fact. People who knew her from her "Other" occupation let it casually slip.
-Got to see unreleased concept footage of Garou 2(Cancelled fighters) from SNk's "Mark of the wolves" Ip in a collab event hosted by NIS. They brought an in-house artist(Disgea) and Snk's Lead-artist(KOF,Garou,Fatal Fury) who were both Childhood friends that ended up in separate companies after graduating collage together as guests of honor.
-Attended a Live commentary+Demonstration for "Little Dragons Cafe" from the creator himself. Known for directing other works such as the popular Harvest Moon series. Mr. Yasuhiro Wada himself was kinda nervous during the presentation that he saved over someone else's saved files accidently. Ran over 20 mins. & Apologized he didn't get to show everything on his agenda list as he intended becuz of earlier technical issues. It was too funny to get mad/disappointed haha.
-Met the director of the "Stein;gates" series during a NA premier event of his new work "Morning Glories".
-Chill with the sound/audio guy+director as they watched along/together with the crowd for Kyoani's "Liz and the Blue Bird" title.
-Met and played a round with the popular Card-fight Vanguard game creator. If U win U get a play-mat+an exclusive promo card.
-Got a free Latin dance lesson + Live Shikishi drawing from Polygon pictures and Studio IG during a promo event with the creative team for
ボールルームへようこそ. The same team also did AOT. (Attack on Titan)
There are prolly a couple more but this post is getting too long & I'm not remembering it atm.
Will update later if I recall anything as I get some more free time to reflect.