Originally Posted by
BearX220
If you don't ask up front, it's OK at the finish to plunk down two or three credit cards and ask the server to charge them all equally.
Indeed - or at whatever amount you'd like them split ("put $30 on his and the rest on mine")
That's not separate checks, though - if you ask the server to
figure out the split for you at the end, they may or may not be able to.