Yes, you could do most of the show logistics yourself. But with the number of things that go wrong, you should consider calling professionals to assist you with show services. I have participated in over 300 shows in the last 20 plus years. When you call me, or any other expert, you must be prepared to answer questions. Here are a few.
Every show has different aspects.
There are some predictable factors. There will be slow times. Rest and get recharged. To maintain an image and continue contact with customers. To create an image and initiate contact with potential customers.