1. Multiple social media posts announcing the event (before 15 days, before 7 days, before the event, etc.). Include reasons on these post on why people should visit your booth.
2. Having a banner on the website about the attendance at the event
3. Making posters about the event and sharing it with sales on whatsapp (so they can share with prospects and folks in the funnel)
4. Writing a blog post about the top attendees to look out for at this event (including yours)
5. Running email campaigns announcing the presence at the event
6. You can also try creating a new email signature of key executives and sales and marketing team to reflect the attendance at the event
7. Devise special offers to visitors of the booth and use these as a bait to entice more visitors to your booth
These are some things we have tried in the past @Umashankar Natarajan. Happy to learn from others