The Texas skies may have poured rain all day Friday, but that didn’t dampen the anticipation of Andy Roddick and Brooklyn Decker leading into their wedding that night, pals of the newlyweds tell PEOPLE.

And the festivities spilled over into Saturday night, where the newlyweds partied with 250 guests at Stubb’s Bar-B-Que, a large restaurant boasting live music in downtown Austin. A guest tells PEOPLE that the invitation specified a “denim-only” dress code, in keeping with the down-home atmosphere – though the groom wore cargo shorts while the bride sported a long dress.

The Spazmatics played till midnight, and the entire party danced and chowed down on brisket of beef and cole slaw as they ate on satin tablecloths decorated with lanterns and flowers.

When it came to Friday’s nuptials, “Andy always wanted a backyard wedding,” says a friend. As a result, rather than saying their vows outside of Roddick’s lakeside home, the couple headed into a tent erected to protect the party from the stormy weather. (One casualty of the weather, however: the groom-to-be’s pre-wedding golf game.)

As If By Magic
But then, as if by magic, once the 7 p.m. ceremony began, the rain subsided and the frivolity began. “Brooklyn looked absolutely gorgeous,” a source says about the swimsuit-model bride, who, for her special day, wore a fitted, custom-made Vera Wang gown with rouching at the sides and a spray of rhinestones along the back.

Though a friend called the event “very simple,” there was no shortage of glamour during the candlelit ceremony, as bridesmaids – who included swimsuit model Julie Henderson – wore chocolate brown gowns and carried bouquets of white tulips and peonies.

The bride, 21, and the groom, 26, exchanged platinum wedding bands by Tiffany & Co. Decker’s engagement ring, set in platinum with a diamond solitaire, was also from Tiffany’s.

Elton Took Requests
Following the ceremony, guests were bussed to Roddick’s country club, where the cocktail hour was followed by a buffet whose selections included steak, fish and pasta. Then came the cake and the real entertainment: a performance by Roddick’s pal, Sir Elton John.

“When Elton found out that Andy was getting married he spoke to him and said, ‘I know exactly what I am giving you for your wedding present. I am going to play at your wedding,’ ” a friend recalls. ” Well, who wouldn’t want that?”

The British music legend performed eight songs for the couple and their guests, who included tennis icon Billie Jean King, then took audience requests. Says the friend: “It is a special thing for them to remember their entire lives.”

Source: People.com