No, not really.
I worked Networld+Interop and other industry shows for a dozen years or so, both for the company booth and the N+I volunteer staff. The halls are layers of steel & concrete, so no guarantees for external access. Even though cell access is usually enhanced with repeaters, there are so many people on cell phones and using smartphone data features that the channels all tend to be jammed most of the time.
Trying to arrange your own data lines tends to not work out well either, as they are low priority for the hall staff to set up (so you can order a T1, but it might not get installed until after the show).
You *-might-* be able to work out something with a booth neighbor to split costs, but it's iffy at best ... and works out about the same as sharing data with the family next door that are all heavy data consumers.
It boils down to the cost of doing business at the show. If you don't like the data costs, you're gonna really squeal when you see the cost for moving and storing your crates, electricity ("Oh, you want an outlet at that table??"), "security," cleaning, and frequent obscure charges (air, water, trash disposal, and these days, probably a list of "green" fees to support the tree-hugger's causes ...).
Good Luck, have fun, be prepared when you go in for set-up to swap SWAG with other booths, take some (a lot) adult beverage to offer the union folks (it is the grease for the union wheels ... helps to gain some priority), be prepared for what amounts to bribes to get your {whatever} delivered/installed/removed/cleaned/connected ...
Trade shows are one of the biggest rackets in the industry.