I believe that there must be some misunderstanding or Scramble has more data not yet available.
Both at Força Aeria Portuguesa and at Tiger Meet, it is scheduled for Beja.
For my part I would prefer it to be in Monte Real, since depending on the winds it is better for spotting, than Beja
As for visits, everyone who was registered for this year, since it was a postponement by Covi19, will be registered for 2021.
See the links below
https://www.emfa.pt/noticia-2950-nato-tiger-meet-adiado-para-2021
https://www.natotigers.org/tiger-news