Along the same lines as your examples, you could use the adjective from the past participle of 'throng', 'thronged':
To gather, press, or move in a throng.
And likewise the adjective from the past participle of 'swarm', 'swarmed':
To be overrun; teem.
(Both definitions from The Free Dictionary.)
For a variety of possibilities (take your pack), WordHippo is a good resource:
- filled to the rafters
- fit to bust
- mob scene