One possible interpretation is that "cumpsters" might be a colloquial or slang term for a group of friends or a social gathering, and "1st visit best" could imply that the first time someone visits or experiences something is often the most enjoyable or memorable.
One possible interpretation is that "cumpsters" might be a colloquial or slang term for a group of friends or a social gathering, and "1st visit best" could imply that the first time someone visits or experiences something is often the most enjoyable or memorable.