I have a bit of a dilemma. My fiance and I are having a small ceremony/reception for immediate family and really close friends. We have a tight budget so our guest list currently sits at approximately 50 people. For those who we aren't inviting to the wedding itself, we are planning a camping trip approximately a week after so we can party with our larger circle of friends. Some of these girl friends I would like to have at my bachelorette party*, but they would only be invited to the camping trip (not the wedding due to our tight budget).
Is this okay? It's a bit of an odd situation, and I'm not wanting to be rude to these girl friends. I'm looking for some opinions on the subject. How would I go about inviting them without making it seem rude or inconsiderate. I want to celebrate with them, but we can't afford to have everybody at the main event.
Edit: After reading the comments and re-reading my post, I used the wrong terminology. I apologize. I meant the bachelorette party, not the bridal party. I'm not fishing for gifts in any way, shape or form. I don't expect them.