Autism Show?

I've been planning to go to Autism show in London tomorrow/Saturday.  I'm getting a bit worried though, as it seems to be aimed at carers and proffesionals, rather than adults  like me.  I also don't have an official diagnosis.  It would be my first autistic event.

How noisy and crowded does it get?  Will I be able to use the sensory and quiet rooms (something I'm looking forward to!)?  Will I be able to have a one to one session (I could do with seeing someone about my sleeping problems)?

Any other adults been: did you find it worth going?