Just a few tips before you take him out:
~make sure he's rested!
~make sure he's fed!
~make sure he's comfortable!
this sounds like common sense, I know. But I screwed up so badly the first time we took .alyvia out. By the time .i'd packed her diaper bag, found my gift card, gotten her dressed, etc... she was tired, getting hungry, and .h.o.t. We didn't leave the house until like 3pm or something, and it was .august in .louisiana

needless to say, we never made that mistake again. She screamed the whole time.
Oh, and...
~don't let strangers touch his skin. They'll probably want to, and they might try. I personally didn't like people getting close to .alyvia and breathing on her, either.