At this age there is not much you can do, I wouldn't change your plans for him though. Try to see if you have a busy day if there are places you can give him a rest from the "constraints" of course the little snacks work well as a distraction or whip out some toys you keep just for the stroller. We used a firm no or no thankyou when the screaming starts but just get down to his level and let him know you hear him. Don't give in right away b/c he will get used to screaming for what he wants,don't give him a big reaction. As far as the staring people might as well get used to it hahaha but seriously some people like to pretend that their child never acted out in public and personaly I don't buy that, I think the older people forget those things, if they don't have kids well they will be in for a suprise when they think they are just going to have a nice outing with baby. Good luck and hold your head high most of all love him lots b/c they get big too fast!