Jtaama was a week-long pilgrimage for the followers of Ramuh performed centering the Life sea.
This included praying, chanting, and various other ritualistic activities, combined with celebrations like dancing, bathing in the sea, sacrifice, and much more.
It was the most holy occasion for the followers of Ramuh and whoever had the means and way to get to Adhan would surely try to get there.
Almost all the nobles or their representatives would attend the festival and many nobles, even pashas whose territories were thousands of kilometers from Adhan would occasionally personally come to take part in the last day afterparty.
And as Amenheraft and his retainers were mostly religious in nature, barring them from performing their pilgrimage was impossible.
Just like Ptolomy and his forces would not take a no in the acquisition of Zanzan, Amenheraft saw no point in a ceasefire if they couldn't have access to their holy site.