I just have a few questions about the invites & envelopes:
First of all, I printed my invites & response envelopes wrong. I put my name first instead of his. I haven't printed my invite envelopes yet though. Would it be unacceptable to print the invite envelopes the same way & let this slide or should I reprint everything? Problem with reprinting the invites is that the paper was left over from a job at my work & we don't have anymore.

----------
Our addressing is:
Lynne LastName and Robert LastName
1234 Address
City State Zip
So for the guest's addressing, is it okay to address it without titles (like so):
John and Jane Smith (John Brown and Jane Smith [for diff last names])
Children in ABC (if any)
1234 South Street
Anywhere, NY 12345
----------
How would you address serious couples who don't live together? The person who lives there first and their partner below them or is it okay on same line? Is it okay to put the female first in this case? Ex:
Sarah Jones and Ryan Brown
HER Address
City State Zip
Side note: We're only doing 1 envelope, not inner and outter envelopes.
Think thats it for now. Thanks!