AVOID THIS PLACE, SERIOUSLY!
Best bets:
Bier? Don't waste your money at this place. Lee's has a decent selection of the German stuff for cheap), the Freakin' Frog has a great selection, but a little more pricey.
Food? Go to Hofbrau when it's quiet, the prices are pretty much the same (tip: It may be loud, but eat there during the 2010 World Cup; we went during Euro 2008 for the Germany-Turkey semi-final; it was intense, most REAL germans I've ever seen in Vegas in one place);
German Market? Go to the International Market on Decatur & Tropicana, they have a wider selection of foods; and enough German ingredients for you to make any dish that would put the Cafe Heidelberg to shame.