DS is doing really well with PT at home and when we go out and about around town.  He is still having some difficulty with pooping on the potty, but doesn't have any pee accidents at home anymore.  But, when we go to, say, my parents' house for the day, he has tons of accidents.  I know he's more distracted because his cousins are usually there and they have lots of toys, but I'm just wondering how long it took for your LO to "generalize" the skills of potty training to other situations other than just home.                
                             
        
Re: PT and going to people's houses
DD seemed to pick it up rather quickly bc she spends a lot of time at my parents house. She also goes to daycare so she is used to going in different places.
I also usually make sure we go before we go somewhere so I know she doesn't have a full bladder or anything. I tend to ask her a bit more if she has to go when we're at a friend's house.
DS will go at places like my mom's house, but he still won't go on public toilets (he's willing to try, but he prefers to hold it until we go home). We've been to playdates, the park, and even a bounce house without accidents. Usually about three hours is as long as we let him go without using the potty.
Although he's great with me, I'm a little nervous about how he will do once he starts preschool next month.
This. It was more the being distracted by other people/kids than actually being at someone else's house. She had some accidents during play dates here at home, too. Like sunnyday, I became super vigilant about it and now it's not a problem at all.