@Emelia8 

Hello Emelia,

I believe, that you should be convinced, that your attention to detail, for such an event, will really be appreciated by all patrons to the concert. That would, in part, be because at such events it is always appreciated when the providers show such attention to detail. Any provider doing so, will be known to have, not only seen to the detail in appearance of what they present, but also the content.

As am I also sure, that it is, as a result of you having been known to take such care, that you are, in fact, known as a good sandwich maker. I likewise, believe that the same would be true of any other food preparation that you were to offer.

Another aspect to consider, is that many people share with you, to greater or lesser degrees, some aspects of OCD, that will, in part, be evident through their appreciation of your work.

With My Very Best Wishes

@HenryX