Everyone went to McGarvey's at some time or another. For my family, a trip to McGarvey's was for special occasions only, and we had to dress up. I remember being annoyed (along with my brothers) that we had to sit there in a sport coat and tie, when many of the boating patrons were sitting there in comfortable T-shirts and shorts!
The well-remembered "toy chest" for the kiddies was always kind of a dud for me. I remember one time coming out of there with a plastic Ratfink-like molded monster. At the time I didn't even know what it was, but now (courtesy of the internet) I know that it was either a Weird-Oh or a Nutty Mad. I wish I had kept it, because it was probably pretty cool! (I should have been happy to get any kind of free toy back then; what restaurant does that now?)
Rather than just swipe the history of McGarvey's from other people's websites, I'll give you a link. You'll find a nice history of McGarvey's on this great Vermilion website, which is definitely worth visiting.
And if you're interested, here's a link to the recipe for McGarvey sauerkraut balls.