Given that no one here is going to attend, we'll have to wait until some one publishes the talk on YT. My guess, that he will trot out the same BS as in previous presentations.
I regret to say that it is now available on YT, all 90 minutes of it. Allen appears to have added some extra "material" including claiming that NASA has removed some Apollo imagery from the Johnson Space Centre as a result of his investigations and appearing now to also question the Gemini programme on the basis the he can't comprehend that a beacon antenna could be deployed after re-entry (Gemini 6 photo). His wrap-up includes a thanks to his reference sources - Percy, Bennett, Kaysing and White - I don't think I need to say anything more!
As this is the basis for expattaffy's latest crock I have seen more of this than is healthy and it's chock full of gems.
There's the claim that no astronomer has been able to tell him where the terminator should be during the Apollo 17 landing. There's his claim that you have to have a viewfinder on a camera in order to use a polarising filter. He shows that Apollo 8 Earthrise image, then asks how they could take it from inside the lunar module. Later on he shows the Blue Marble image and claims it's the only image of Earth he could find - despite having already shown the Apollo 8 Earthrise and two shots of Earth from the lunar surface in Apollo 11. He says it's impossible to take the Apollo 17 photo where the Earth is at the end of the flag. He claims that a photo of Armstrong in the LM was taken using a flash and that red-eye is caused by the flash being too close to the lens.
It goes on and on on - it's a full house on the conspiracy bingo card with a howler every few minutes (the LRO took its photo of Apollo 12 from 30 feet), right down to claiming that all the moon rocks were stolen and he has one right there with him. Oh, and let's not forget that Copernicus crater was not caused by an impact but electrical discharge caused by the passage of Venus nearby (no really, there's evidence for this).
Throw stuff at him, just make sure it's nothing valuable - he's not worth it.