My almost 6 month old has been in daycare 3 days a week for a little more than a month now. In the beginning, they mostly tried to do the equivalent of what we do at home - we often nurse to sleep, so they would give him a bottle, wait until he was fast asleep, and then put him the crib. Now that he's been there for a while and is getting used to their routines, they'll put him in the crib sleepy but not actually asleep, let him fuss for a couple of minutes, then jiggle or rock the crib or pat him to help him fall sleep. As his daycare provider said yesterday - he's a smart baby, he's figuring out the routine. I'm not worried that they'd ever let him do more than a little fussing - they're trying to put 6 babies to sleep at the same time - they're not going to use CIO or no one would get any sleep.
If your're thinking only one day a week, then your DS probably wouldn't catch on to the routine, so this might not work for him. But talk to your DCP and see what their philosophy is.