Do I care if the corn cross pollinates with another variety if I'm
not
going to save the corn seed for next year? Does it matter if it's a
hybrid or an open pollinator?

Thanks
Gary

Yes and No. With corn you eat the seed, so you are immediately dealing with the
cross, Most times with standard corns either OP's or Hybrid it doesn;t matter
too much. In fact I often plant alternate rows of Silver Queen and Golden Queen
which results in a nice bi-color mix, If I did not like bi-colors that could be
a problem, The supersweet varieties (SH2) tend be become tough and chewy when
cross pollinated so extra care must be taken to isolate those from standard
corns,