Struggling with autistic routines/rituals that clash with rules

Hi everyone, I really want to discuss a problem with people who would likely understand. I'm going to be part of a live studio audience for a TV show I really love and have been really looking forward to seeing it live. Unfortunately, the place where I'm going has multiple rules that have to be followed which are clashing with my routines/rituals. I have been having meltdowns over the last few days and am really not sure what to do. Below are the rules which are causing me problems:

1. No bags allowed - I appreciate why bags are not permitted at some places due to security reasons but unfortunately the rule is giving me immense anxiety about not having items I need including my autism sensory stim toys, noise-canceling headphones etc. Whilst they do permit bags for medical reasons, I don't feel they would count autism as it's not like a physical condition and I don't think I would have enough proof for how much I need my things. I feel angry that the event isn't accessible to me with the amount of meltdowns I've had over the last few days. I also get very logical over rules like alright if bags are so dangerous we should be banning them everywhere - I feel I have a very all-or-nothing mindset with rules.

2. No food allowed - again I appreciate they don't want the mess and people eating during the taping but unfortunately, the show is right over dinner time (6 pm-10 pm) and I get really upset if I can't eat during a certain timeframe. I feel that they should have scheduled it at a better time (like straight after lunch) if they are going to be so strict with food or at least let us food for breaks etc. 

Once again, I completely appreciate that the rules are needed for something like this but I feel very little understanding has been given to autistic people like myself for how difficult it can be to attend an event like this. I've been so upset and angry over the last few days because I feel so unwelcome. I'm seriously considering not going as I don't think I can manage all the rules 

Anything advice or anyone that can relate to this I would love to hear your thoughts.