What tip percentange do they add for large groups?

[DumboFan]

We have a group of 11 that will be dining together at least once a day. Does anyone know what percentage they add as a tip to the bill? I've done a search, but can't find the answer. Also, the CMs I talk to don't know either!

I'm trying to get everyone an estimate of how much the table services will cost.

TIA!

 

[n2mm]

18%. We just returned last week with a group of 11.

 

[DumboFan]

That's what I thought it would be, but couldn't get anybody that actually knew!