Sofia Vergara and Joe Manganiello have made guests sign confidentiality agreements ahead of their wedding this weekend.

Sofia Vergara and Joe Manganiello

Sofia Vergara and Joe Manganiello

The couple are determined to keep their ceremony and reception as intimate as possible when they tie the knot in front of 400 family members and friends at The Breakers hotel in Palm Beach, Florida on Sunday (22.11.15).

A source close to the pair said: "It's a nighttime affair and they want to make sure it's very private. They have hired a ton of security and made everyone sign confidentiality agreements. They don't want any [unauthorised] photos to be obtained and are taking great measures by doing everything inside on the night of the wedding."

The 'Magic Mike XXL' actor, who proposed to Sofia in December after six months of dating, has been relaxing with friends at a local golf course ahead of their nuptials, while the 'Modern Family' star, 43, has been pampering herself at the lavish resort's spa.

The insider told E! News: "The entire hotel is rented out for the weekend. People are flying in from all over the world to be there with them.

"They're making it a long-weekend celebration with the wedding happening at 6 p.m. on Sunday evening. They're expecting [the reception] to go all night long with tons of dancing and live performances. People can rest and recuperate on Monday and stay for the Thanksgiving holiday if they choose. Sofia has a lot of family in Florida and will stay to spend time with them."

The pair can't wait to be married and another friend added: "They've been living together since very early on in their relationship but they feel like this is a new chapter. They can't wait to be able to call one another husband and wife."