[ChuckElias]

If you really didn't get a list, then I would suggest packing a full uniform and a "summer" uniform. Take 2 or 3 V-neck striped shirts, black V-neck t-shirts, black socks and long black pants. That's your normal uniform.

Then also pack a few pairs of white socks and a few pairs of black shorts. That's your summer stuff.

Also, take black sneakers. If the games will be played outdoors, take whatever black sneakers you want. If the games are indoors and you think you'll need your "normal" uni, then take a nice pair of officiating shoes.

You can always ask if shorts are acceptable when you get there. If that's too much stuff to take, or you don't have any of it and you need to know what to buy, then (as mick said) contact somebody at the camp and find out from them what to bring.