While your own yard is a good option for the homely feel it provides, a private piece of land is great for the privacy and landscape, though if cost is a factor, you can make a public park work too.
The only disadvantage here is the possibility of strangers waltzing in and snacking on the hors d'oeuvres. While each venue comes with its advantages and disadvantages, the one settled upon is usually the one that fits into the budget and caters to the space requirements.
Ideas for a Garden Wedding Reception
Flowers are the perfect complement to any natural setting and can be used as table centers or suspended along with curly-willow balls over tabletops.
Other ideas include setting up a romantic photo table with pictures of couples in your family (siblings, parents, grandparents etc.).