What you learn as a London Film & Comic Con newbie
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London Film & Comic Con has been running for more than 10 years, but this is the first time I have been.
More than 80,000 people attended the three-day event at London's Kensington Olympia.
It attracted celebrities including Michael J Fox, Sigourney Weaver, Robert Englund and Neve Campbell.
Along with signings and discussions, there are also comic zones, gaming areas, a young adult literature section and hundreds of cosplayers.
London Film and Comic Con is hot
The event is packed and very warm. You can definitely tell that tickets for Saturday and Sunday are sold out.
Jason Joiner, the director of Showmasters - the company putting on the convention - points out that the air conditioning in the UK is "rare".
Some of the fandoms are intense
Queues for photographs with incredibly popular people like Robert Englund in his full Freddie Kruger make-up and Christopher Lloyd with the DeLorean from Back to the Future are massive.
Some of the longest lines for autographs snake back on themselves - but most people seem happy to wait to meet their idols.
The Michael J Fox "Diamond" packages - which includes an autograph signing, photo opportunities and seats at the Back to the Future talks - cost £445, external. That's on top of the price of the entry ticket.
People have gone all out when it comes to costumes, clearly having spent a lot of time and money on making sure they look exactly like their favourite character.
Cosplay can be dangerous
Speaking of cosplay, when it comes to making your outfit, there are dangers to be considered.
One talk in the special cosplay area gave tips on how not to "die" while working on your costume.
Using spray paint in an unventilated rooms seems to be a common error. Go in the garden people!
Back to the Future II did get some predictions correct
Now that 2015 is here, it is patently obvious that our dreams of hopping on a hoverboard like Marty McFly are not going to come true.
That is unless scientists really put their heads down and concentrate for the next few months (please scientists, please).
Back to the Future II fibbed to us. Not only are there no hoverboards, but shoe laces don't self-tie and cars are still firmly on the ground.
But at the 30th anniversary press conference, Michael J Fox says: "One thing the film did get right is... my receding hairline."
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