Eastbourne's Devonshire Park Centre venue is celebrating after two new clients - the Campaign for Real Ale (CAMRA) and Royal British Legion Women's Section - have increased delegate numbers ahead of conferences this month.
Both associations initially predicted a footfall of 2,000 delegates, but in both cases more than 1,300 additional delegates have signed up - the most popular destination ever in CAMRA's case.
The CAMRA conference takes place from 14-19 April, followed by the Royal British Legion Women's Section on 21-23 April.
"These delegate numbers are a significant boost for Eastbourne and testament to the town's growing reputation as a business destination," said Eastbourne Borough Council cabinet member for tourism, Councillor Susan Morris.
Conferences between now and the end of May in Eastbourne are predicted to book some 32,000 bednights, and between 2010 and 2013, the town has 18 confirmed conference bookings, with an additional 22 events awaiting final confirmation.