I feel compelled to answer a few questions on this topic concerning both the Ibercup and the Madrid Sur Cup.
Let's start from the latter which, as Brian confirmed and to everybody's surprised, turned out to be a very poor tournament in 2014.
As Tournaments Abroad we had been working with the MSC for a couple of years, with no notable incidents. I attended myself back in 2013 and the experience for myself and my referees was very positive. 2014 was, however, a different story and referees were in fact excluded from the tournament for no reason on the last day of the event. As Brian said many problems were caused by language issues, as none of the organizers spoke any English, however, as we found out later, there was more. We were told by some "friends" in fact that the move was planned well in advance by local referees who, maybe because international referees performed better than them, grew tired of seeing all finals given to international referees. Lawyers are now involved.
The Ibercup however is a different story. It has been running succesfully for 5 years, as Aled can confirm, and we are going into our 6th year full of confidence and organizing three different editions under the same brand: Spain, Portugal and USA.
Aled, there is a reason why you won't find any referee on here accepted into the Portugal event: there is none. We are not accepting any Englisn self-applicant for this year's tournament except for assessors, as the English County FA groups have taken all places available to English referees. All self-applicants will be sent to Spain, only exception being some junior referees.
Last but not the least: Norway Cup. Unfortunately this isn't open to British referees as they have to follow a different procedure to get involved and refer to Mr James Campbell of Bedfordshire who is the English Referee Ambassador for the Norway Cup.