Make the party more attractive
If you have decided to celebrate the promotion of your wife, just make the party more attractive by adding some game of casino in it. They will really get entertained at the party as they will enjoy playing those games at the party. You can make the guests feel important by printing some nice looking casino invitation cards and printing some personal message on it. Many such wonderful cards are available on the internet and you can easily choose one from them.
Since it is an office party, you must also make it a formal one. You can also send formal invitation cards to them. You will be surprised to see that lots of such cards are available in the internet and you can get them at an affordable rate. There are many wonderful formal designs which are at the same time, attractive also. It is advisable to send those formal cards to the office colleagues of your wife. They will really appreciate your taste and emotional attachment to the party.
As they are office colleagues, you must go for printing of note cards to show your respect towards the guests. You can buy a set of such cards from the internet and make some personalized message on it. Your guests will really appreciate the way you will express your gratitude towards them for coming to the party. These cards are quite cheap and they will charge some extra money for the message you are going to print on the cards.