Thailand Tourism Festival and Thailand Travel Mart will be held from June 7-10 at the Challenger Hall, Muang Thong Thani.

A visit to the event is a virtual tour of Thailand as there is a complex that represents the four regions of the country, each marked by an area featuring lively cultural shows, exhibits, recreation and educational activities. There will be travel-related seminars throughout the period.
If you are short of ideas for your next holiday, proceed to the Consumer Travel Fair, where hotels, resorts and tour operators throughout the country and from the Mekong Sub-region will on hand to fill in visitors with travel ideas and new products.

More info here

Bangkok Post