I was waitressing in the 70's by the Univ of Cincinnati. Not exactly a
college town but in the area around the college that catered to the
college population.  I did not wear a uniform when I cocktail
waitressed - just jeans and a white shirt and they provided a company
apron. At Red Lobster we wore a sailor uniform.  And at a local upscale
seafood rest we wore not a uniform per se but all the same basic thing.
We bought our own black skirt and vest and a white dress shirt with a
button down collar and black shoes. Men of course wore black slacks but
the women had to wear skirts.  Hope this helps!  DianeW

I went out to eat a lot in a college town in the 70s, does that count?  Don't
know if it would apply to Chapel Hill, but in Gainesville I don't recall
anyone wearing uniforms to wait tables except in the chain restaurants and
the more upscale places.  It was a time of major openings of alternative
restaurants and, being curious types, my folks took us to those places a lot.
Being a teen, I naturally was embarrassed to be there with my parents!  LOL  
The folks working at those places were dressed in the style of the times.

There were a few places we went where employees wore more of a uniform,
generally a dress or skirt and blouse for the women of a designated color.  
Possibly pants for the women, but I don't recall clearly how widespread
acceptance of them for women as uniforms were yet.  Men would be in a shirt
and pants of designated colors.  But we went a lot to places where the
servers wore jeans and wild tops.  More interesting food.

I'll ask Mike what he remembers about eating out in Ann Arbor at the time
though I suspect they were going to many similarly alternative places there.

santa cruz, no uniform---casual place though---mainly a deli and bagel house
in a converted hotel lobby, with tables around a central fountain and
fountain pool (can't remember the name of the place.  i was 18 or 19 back
then and it was only for about 3 months, cuz i was layed off and then called
back.  bet, melinda remembers the name of the place, though.  1966-67,
downtown santa cruz---think there were 5 universities in that area back
then).  near san jose state and santa clara, there were several restaurants
(breakfast places and steak and dinner houses) and it seemed like the common
waitress attire for all of them was black skirt, black shoes, white blouse
and black apron and hair up on top of the head or in a tacky hair net.  but
u of santa clara was a bit more preppy anyway, back then.

kate

UNC-G last year there 1971. John went to Duke and we
ate often in Chapel Hill at the Zoom Zoom room. Strip
steak and onions and zoom cider. and french bread
dripping with butter. That meal had so much oil in
it... makes me burp thinking about it. rofl
Duckie

I have sent this note along to John. Been trying to
remember what all those black men wear wearing. For
some reason, I am thinking black pants and white short
sleeve shirts -- not knit ones, the kind you would
press but guessing they were permanent press.
We went back there to eat when John went back for 10?
year reunion. We couldn't believe how greasy things
were. Actually the Zoom was closed but it's sister was
opened. Can't remember the name of it - John will. The
man that waited on us had been waiting on tables there
for just ever.
And our favorite in Durham is still there -- Bullock's
barbecue. Best hush puppies ever.
Duckie