If you're looking for alternative phrases to "be jammed with," there are plenty of options to choose from! Some possible synonyms include "packed with," "overflowing with," "filled to the brim with," "teeming with," "swarming with," "crawling with," or "alive with." These expressions all convey a sense of abundance, movement, or activity, and can be used to describe a wide range of environments, from crowded spaces like theaters or stadiums, to places that are bustling with activity, like markets or city streets. Whatever your needs, there's sure to be a phrase out there that captures the energy and excitement of a space that's filled to capacity!