Originally Posted by
rugby23
You can do this using just the GUF only if I class is available, or if you need to use a joker then consider using Avios and saving the GUF for another day?
"I" class is not available at the moment, therefore I would need the Joker to apply the GUF.
Regarding Avios, since I live in a country where you can earn them only by flying (and BA has become very stingy about it) I prefer to use them in more effective ways, like booking flights that have a high cash price.