The only things that should be exiting the premises are the wedding favors. Unless you've expressly been given the go-ahead to do so, it's not okay to leave with your table's centerpiece or flower arrangement. And for heaven's sake, don't pack the leftover grub for later.
The bride and groom's families may have plans for these perishable items, and if you leave with hired vases and the like, there's a good chance they will pay handsomely for your straight-up thievery.

This site offers information designed for educational purposes only. The information on this Website is not intended to be comprehensive, nor does it constitute advice or our recommendation in any way. We attempt to ensure that the content is current and accurate but we do not guarantee its currency and accuracy. You should carry out your own research and/or seek your own advice before acting or relying on any of the information on this Website.