My wife prefers the contemporary services and she has close cousins that attend a church that worships this way. I went when we first moved up here and I had no problem there except with my hearing issues, I could not hear with their sound system that well which was exacerbated by a preacher that wondered all over the pulpit so I couldn't see his mouth the whole time, which is a requirement for me to understand someone usually. But anyways, several of the men were wearing shorts and drinking coffee from the foyer coffee shop. To each his own, but that wasn't for me, but hey, they were in church hearing the message so good for them.
I have found a smaller church, still good sized, and pretty close to capacity every Sunday. An excellent old school preacher who's sermons are right up my alley and I can hear every word. The hymns are traditional which I prefer and no one wears shorts, at least not to the morning services. A number of men wear newer jeans, which is not unusual these days, but so far I just haven't made myself feel comfortable enough to do that yet. I'm not in a coat and tie, as I'm just not a tie wearer anymore except at a funeral of an older person that would expect that. To go to church I wear dress pants or khakis and a button up shirt. I just think shorts in a church made up of a lot of older people (I guess I'm one of them) is disrespectful to the Lord, even though I know he doesn't care. I know this is a bit of a paradox and I really don't care what you wear to church but I think an effort to be respectful to the Lord should be made even though your attendance is respect. It is just do what makes you comfortable and don't do what you are not comfortable with. Getting the message is the main thing.
