It means the lodging segment of the hospitality industry such as hotels, inns, motels and others. Basically any establishment which offers a bed for a fee.
Hospitality shown. "We were grateful for the hospitality shown by you and your family."Unless you wanted to say, "We were grateful for the hospitality you and your family showed us."
The pineapple is an old symbol of hospitality and can often be seen in carved decorations (untufted pineapples are sometimes mistaken for pine cones). Quoted from...
As an ex-barman I can tell you that it is evening of entertainment and drinks for members of the hospitality trade. If you can't prove you work in hospitality, then you don't get entry to this event.
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