Thailand ? Dancers, puppeteers and apologetic tourism officials greeted travelers as Bangkok’s international airport officially reopened Friday, but frustration remained high with scores of flights canceled.

The airport was operating at about 50 percent capacity. Many airlines were unwilling to say when they would restart operations with foreign carriers concerned about security and safety.

The weeklong airport occupation by the People’s Alliance for Democracy protest group, which ended Wednesday, caused the cancellation of all flights and dealt a heavy blow to the country’s tourism-dependent economy.

More than 300,000 visitors were stranded during the shutdown and clearing the backlog is expected to take days.