no doubt they will sell out as they did in the past siyumim and b'h ka'h our numbers are only increasing keyn yirbu
having been to the 2 prior siyumim its a real kidush hashem and is in some small measure a glimpse of how sholosh regulim will look like bkorov beymeynu amen
having many of our gedolim and talmedi chachomim attend is a real treat
having in mind the 6 million kedoshim our brothers and sisters when reciting kel muley rachamim is a real emotional moment. answering amen yehei shmey raba/shma yisroel with 90k people definitely brings one to be proud of being part of klal yisroel.
the above is for anyone and everyone all the more if one actually attends a shiur or learns daf yomi for 7 1/2 years day in day out its the culmination of being part of so many likewise motivated yidden to be kovya itim each and every day studying hashems torah