Lake Tahoe wedding help...?

Ok so my fiance and I have set the date for 6/2/12. We thought we had a location picked out, but because of the weather these past couple years we are worried that if it starts raining (or snowing) we will have no where to move everything to. Do you guys have any suggestions? We want an outdoor wedding that accommodates 120 people max and includes space indoors as a back up plan. I grew up in Incline Village so I strongly prefer the North side of the lake. Thanks in advance!