I have just received confirmation that all 18 greens on the Master (1 & 2) course will be replaced with Bermuda greens in 2019. The Master course will be closed from 11 May to 15 September 2019.
During this 4 month period there will be some special deals at other courses in the area for people who are members (buy tickets for 2019?) at Almerimar. As there will only be a single 9 hole course available at Almerimar.
As yet, there is no more detail. My guess is that people will receive more information closer to the end of the year. When the prices for green fees for 2019 are likely to be announced.