We're researching caterers for a DC area wedding. Most of the proposals we've received thus far do not factor in gratuity- we've read that in general 15-20% is appropriate. However, one proposal we've received does include gratuity- at 25%! I don't mind if they include it because it makes the total cost more apparent, but that just seems high to me. Is this normal? I'm inclined to ask them if it's a mistake, but then, it is DC. Everything seems to be more expensive.
Any input would be appreciated- thanks.