I will make three cases:
First option, move to San Antonio. SCI took your dates in Dallas, move to their home turf. Convention space is large enough, plenty of hotel rooms from La Quinta to the Grand Hyatt in short walking distance. Lots of tourist restaurants on the Riverwalk. Downside is the the Airport sucks, International travelers will have to fly into Austin or change planes and would required a large buyout payment
Second option, Move to Houston. They have two convention centers that can hold the convention. A major airport (under a remodel, awful traffic and most flights are on United - which sucks) and hotels rooms not as convenient as San Antonio, but you can run Buses like in Dallas. Downside you are cutting into HSC home turf and would required a large buyout payment. Also might have to cut a deal or merger with HSC.
Third option, stay in Atlanta and hope of good weather and heavy foot traffic. Downside, die in 5 years.
of those three, I like the San Antonio idea best.. but agree that the airport and the contract buy outs are pretty big obstacles..
that said, Austin really isn't that far of a drive from San Antonio.. the traffic on the corridor between the two sucks.. but the distance isn't that great.. I think that's pretty easy to overcome if everything is communicated properly and timely.. the out of country exhibitors simply want to have a successful show and have a crowd available to sell hunts and sell stuff to.. if they have to spend 90 minutes on the road getting from Austin to San Antonio, I think they'd be willing to do that if they had assurances that the foot traffic at the show would be substantially improved over ATL.. and for the international travelers that are coming to see/buy, I don't think its that big of a deal at all.. if you're willing to spend 10-15 hours on a plane and are planning on a week+ in the US to attend the show.. an additional 90 minutes isn't that big of a deal in the total scope of things..
Im definitely not an expert in contract law.. and haven't seen the contract between ATL and DSC.. but I do know a good bit about business.. I'd guess if DSC approached ATL reasonably, they could negotiate terms outside of the contract agreement for repayment.. ie if the contract calls for $5M to be paid to sever the agreement and the terms are "immediate".. and those are terms DSC simply cant meet... most organizations are going to be willing to work something out if its in the best interest of all parties involved..
We're I DSC for example, I might start my negotiations by offering to pay the full value of the $5M, but over a time period of 7 years.. which would be painful.. but.. not nearly as painful as the financial net loss they are going to take if the show stays in ATL for the next 5 years..
We're I ATL, I probably wouldn't accept that initial offering.. but knowing that Im likely never going to get any of that $5M if DSC fails as an organization as a result of staying in ATL for the next 5 years.. so I'd be willing to make some sort of counter offer (ie we'll give you 5 years to pay the $5M in monthly installments, starting RIGHT NOW... if you default by even 10 minutes at any time in the next 5 years, we'll call the debt immediately and haul you into court if necessary, etc..etc..)...
again, the above is a hypothetical.. I haven't seen the contract, don't know the current terms, haven't ever negotiated with the city of ATL, etc..
but it would be foolish for ATL to take a screw you, Ive got you locked, you're staying here, and you're paying.. or I want all the money owed RIGHT NOW approach.. if they know DSC cannot meet those terms... I'm pretty sure they would want to figure out a path that both parties could consider a "win"..