For your guests the wedding invitations are the most important part in the lead up to your wedding. The information they receive helps them decide on their outfits and allows them to make the necessary arrangements to attend. Many guests may have to travel a long distance and therefore it is appropriate to include directions and a list of accommodation. This is additional information which is not included on the wedding invitation but rather on a separate card included in the wedding stationery pack sent to the guests. The norm is to include a map and directions to both the venues for the ceremony and reception, and a list of accommodation including hotels and bed and breakfast providers.
Keep in mind that invitations do have an important job. No matter how carefree or nontraditional you and your fiancé are, the invitation should include the date, time and location of the wedding and the reception. If you expect a response from your guests, it is also important to include a self addressed envelope with postage included. As long as these important pieces of wedding etiquette are adhered to, you can be as unique and nonconforming as you like with the rest of the invitation.