Wedding Reception Garden Party, need ideas.?

My pregnant fiance & me are having a courthouse wedding with a few family members there this Friday. The next day, Saturday, we are having a BBQ reception party at her uncle's house - he lives in the country and has a nice plot of land. Her dad has bought like 50lb of pork, 20lb of chicken, and like a veggie platter, and some random other things (theres going to be a live band also). Also, he has gotten like a 3 cases of beer. I think at most there will be like 30 people there (hopefully). I'm going tommorow, when I get paid, to get decorations for the wedding and liquor. What kind of decorations and liquor should I get? I have at most $150 budget to go on. I was thinking of white Christmas lights to put around the porch and other areas (there is going to be 2 to 3 fire pits there too). Liquor I planned on getting a big bottle of Bacardi and a bucket of fresh strawberries to make homemade fresh daquaries and some Tangaray (sp?) gin. What else can I get for decorations and liquor?