127 is esentually the same processing as 120, you put it in the 120 canister tape it to the card if they are using a commercialy processing machine and the machine does the rest, wal la, about 10-15 minutes later, it comes out the other end, cut off the card and if they have a 127 carrier for their print machine, then they can do prints for you as well, we used to do it all the time, there was no more trouble to do 127 than any other film.. heck we used to do 110 and 126 the same way!
Dave