May I take this opportunity to thank you for the illuminating article. No organizer would like to tell their patrons” Please do not come to our event(S)”. Under the circumstances of different place, different country, and different rules of the land GSCA, Kallol, Dallas and many other place s are  compelled to restrict the number attendee. It is very unfortunate but until we can find a better solution organizations will have no other choice. Hopefully with the time angry arguments will be replaced by logical thinking and constructive proposal .