At the school where I teach, every time someone gets married, the Sunshine Club throws him or her a bridal shower. Thus, the Sunshine Club is throwing me a shower at the end of the school year for my August wedding. My problem is that my wedding is over two hours from where I work and live, and I have only been working at this job for one school year (so when we started planning the wedding and guest list in August, I didn't even know my co-workers yet). We are also at maximum capacity for our venue already. As a result, I'm only inviting the people in the department in which I work. I'm careful not to discuss my wedding at work, especially with those I am not able to invite. However, I still feel guilty having a shower with people who won't be invited to the wedding, as I know this is bad etiquette.
I brought up my concerns to the head of the Sunshine Club (the lady hosting the shower), and told her that given not everyone is invited, a shower would not be necessary. She says this is the policy of the Sunshine Club and not to worry, they throw showers for people who are not inviting everyone all the time. I'm wondering if I should just accept this, or if I should talk to her again about not having a shower. I feel bad, but I don't want to be pushy and offend anyone.