Are there any limitations in the number of dancers, couples or teams that can enrol to the WADF International competitions and must there be qualification competitions in each country so that only the best dancers, couples and teams can enrol for WADF International competitions?

No at the moment there are no limitations to the number of dancers that can enrol. It is not necessary to hold qualification competitions in each country. All members are entitles to enrol any competitor to any WADF International Open competition.