The various customs Alexander alluded to was most certainly the Adhanian noble tradition of gifting women to one another.
One in which he made it abundantly clear he was not interested in participating as then Alexander ended his long list of offers and demands for joining him.
While arriving at the end of the three-page demands and offers the nobles sat quietly for some time.
Thinking.
Reading.
Whispering to one another.
Then reading.
And then thinking some more.
It seemed they had a lot of talk about among themselves.
And seeing this Alexander smiled and suggested, "Of course, you do not have to answer me right now. You may have the week to decide."
But then with the same smiling face threatened, "But remember, you have to acquiesce to either one of the demands. Because if you do not agree to either of the options, we will not have any other options either."