The WCA should request for IWGA(International World Games Association) membership, if they haven't done so. Membership with the IWGA will provide better exposure for cubing as a sport since,IWGA membership will also make it easier for cubers to attend events since the IWGA is recognized by the IOC (International Olympic Committee) and,My guess is that with the support of your country's National Olympic Committee you, as a cuber attending the World Games, will have less to worry about in terms of logistics and finances.
"The principal aim of the IWGA is to develop the popularity of the sports governed by its Member Federations, to improve their prominence through excellent sporting achievements, and to conserve all the traditional values of sport through The World Games."
"The IWGA is aware of the importance for athletes and officials in all sports to participate in The World Games as nationally representative delegations. To achieve that, the IOC encourages all National Olympic Committee to support and assist their multi-sport delegation taking part in the event."