Is it rude to request gift cards on your registry?

For my baby shower I am really hoping to receive gift cards in addition to the items listed on my registry so I don't end up with a bunch of crap I don't need or won't use because I don't like. However I wasn't sure if this was a rude request? I feel like it's someone's baby shower they should have the right to request what they prefer to receive but at the same time I don't want to feel rude or snobby. Do you guys think it would be ok for me to put on my registry a small little note that says something along the lines of gift cards from these stores would be much appreciated and list stores that I would prefer to receive gift cards from or is that rude?