I'm a dub fan but when the movies come out....guess what has more showtimes Subs and I dont think it has anything to do with money for the movies many anime fans don't care if its dubbed or not
One quick google search of the most recent Chainsaw Man movie, and it just seems to vary from theater to theater (hell, one of them even only has dubbed available), but those that offer both have a consistent spread (Blurred cinema names and addresses for privacy reasons).
All I'll say is that I feel like if most people didn't care about whether something was dubbed or not, these options for theatrical anime movie releases here wouldn't even exist. It's not unreasonable to feel like the park that's about movies should offer this same leeway when you're trying to bring in the anime crowd.
While I don't disagree that a demand for dubs exists, your point about cons doesn't really track here. Certain types of fans like meeting people involved in films and television shows they enjoy. If the language barrier didn't exist, I suspect these fans would be just as excited to meet the voice actors behind the tracks for the original language.
The bottom line is these things cost money and resources - probably more than you realize. That isn't an excuse, and I'm not fundamentally against localizing these attractions through dubs. However, I think the reality is that most of the people excited by an anime port being screened are not going to be especially upset by needing to read subtitles or deal with the original language tracks. The people upset by subtitles are most likely going to be the ones who don't engage much with anime in the first place. When faced with a limited budget, the folks planning and executing Fan Fest (and HHN) are deciding that something (even if it's a direct port without a dub) is better than nothing.
With all that said... by all means push the issue in surveys if you feel so inclined. The surveys do matter, and it could make a difference down the line. I'm just not convinced there's enough of a push to move the needle.
I see what you're coming from, but I wanna say that more often than not, that desire to meet VAs usually comes from having seen a dubbed work in the first place. And yeah, there's no telling what the exact numbers for resources are, but assuming the budget is still less than what typically goes into HHN as of now.
Maybe it could be safer now to dip their toes into these extra resources now that they know FFN was a success. Once again though, I'm saying my point as someone who has seen subbed anime before. I genuinely think it's harder to keep up when put into a theme park attraction, and I'm certain I'm not the only one. But yeah, I'm gonna be doing my damndest to keep up the word on surveys. I just hope there was enough word of that in this year's.
EDIT: Small addendum after re-reading it some more, but regarding the whole thing about a limited budget and it's better than nothing, I do see that, and when I got wind of JJK being subtitles only, I was willing to give it a chance given my prior experience with subbed anime. I thought it was fine until I got to the main show footage itself. Again, I was willing to forgive it on them testing the waters and it being the event's first year. Sure, HHN's was probably also a last minute decision but it's a bit concerning and I can only hope that'll change next year. I just also hope I'm not truly alone on this.