There is nothing stopping you taking photographs like this but you will need to use a tripod or other stable means of support to avoid camera shake. Alternatively, you can switch on your flash but that will now be the main light source and the photograph will look totally different. Change the lighting, change the picture.
The best thing a bride can do to make my job easier is to trust me. As long as I have the trust and respect of the bride and groom, most wedding days go off without a hitch! I don’t need much time during the wedding but the little bit of time I need is best organized by letting the families know about being available for photographs at a certain point throughout the day. As long as there is time set aside for that, everything will be a breeze!