Router setup as a Wireless bridge

I really appreciate everyones help. I am now connected, but not yet how I want. Still having a couple issues. Here is what I did. Maybe someone can direct me where I am messing up. I had an old Linksys WRT54GL, and I was able to change the firmware to DDWRT. After looking at their tutorial and countless videos, i set up a repeater bridge. I am connected, but the issue I am having is with the security. I have no issue connecting to the park wifi as a simple repeater. I have trouble when I add a virtual interface. I can set that up as a completely different SSID, but when the password is different than the password of the park wifi network, it doesn't work. Also, if I disable security, it works, but for obvious reasons, I don't want to do that. Even on the WW-DRT wiki for setting up a virtual interface is says the password has to be the same as the router you are connecting to. I also have not set up a VPN yet, but I am going to try to do that. I am not sure how that works with a repeater instead of a regular router. Everywhere I read says I need a WAN IP to set up a VPN, but when the router is set as a repeater or a repeater bridge, WAN is disabled. For now I am connected, but I am hoping someone has some tips to help me set it up how I was hoping. Thanks again everyone for your help.