The venue is also notorious for bad mobile data signal (I honestly think the venue deliberately blocks signal to get exhibitors to pay for the overpriced wi-fi, since I've never had this issue even in bigger convention venues...), so plan ahead for that if you're planning on taking card transactions. I'd recommend bringing a hotspot if you have one and connecting your terminal to that, or trying to hotspot your phone to see if it worked. My helper had AT&T and I had Verizon; his connection was generally better and we used that to run the Square terminal, so take that how you will. However, attendees are aware of this issue and generally pay in cash; definitely expect to make a bunch of sales in denominations of twenties or tens as a result.
Best thing I can say about this show is that the staff are extremely nice and the green room they provide to both guests and artists is excellent, as it's stocked to the brim with several tables of free tasty food and drinks. As a result, I will consider giving the spring show a try next year even though I have sworn off ever doing the fall show again, but I'm going to still go in with low expectations since I think my work just generally doesn't do as well with the comic con crowd as with the anime crowd. But hey, it's local and I still do make some profit, so maybe the spring show will pleasantly surprise me.
That being said, this is a collectors show. Some cons draw anime kids and people who buy prints, but this show tends to draw old people with money as well, which is great if you have originals and high price items. If you have done a few shows, and tend to be profitable, I'd say give it a shot. If you end up in the dead zone by the green room (which is excellent, by the way), I'm sorry.
Motor City has been a good show for me to work. The artist tables are not too pricey and they are big. There are wonderful fans there both new and returning. The cost for them to get in is adequate and the celebrity line-up is always decent. Recently they have separated the "flat" artists from the crafters and it seems to help out for the attendees being able to find who they are looking for as well as keep the displays from varying too wildly throughout. They have a green room for anyone working the show where they do provide some decent snacks as well as you can chat with some of the celebs there as they have a snack too. The after party in the hotel is always a good time to mingle with fellow creators and maybe meet one or two of the celebs too. I am excited to see what this next weekend brings and I will do my best to update my review here afterwards too.