Yes you can, any self-respecting wedding site provider has this feature. The photo gallery is always present, although they tend to limit the storage space for free accounts. And a secret just for you: a high quality service can be recognized from its Instagram support. Videos and clip shows appear less among your possibilities, so make sure you choose a site that is capable of handling them. The same goes for music playlist, which are a bit on the ban list as people complain about the songs disturbing the viewing experience.