We had this announcement prior to our RC:-
Safety and security are a very high priority for both us and the Amex venue. For this reason it is absolutely essential that delegates wear convention Lapel Badges at all times, including volunteers for pre-or post-convention activities on site; these should be viewed in the same way as an entry ticket. As in previous years, bag checks will be undertaken on entry to the venue. Please try to limit the size and number of bags as far as possible. Please note that flasks and metal cutlery of any sort are not permitted. Drinks in plastic bottles of 500 ml or less are allowable.
George