i actually have a double set of rings for the summer and/or travelling, because i find in the heat my fingers swell and i dont like my rings on when i sleep. But taking them off and on in a strange place is a recipe for disaster so i just bought myself a cheap costume set from walmart, then if i took them off and lost it ... no big deal. They are in a slightly bigger size and look somewhat similar to my real ones...and i wont feel 'naked' without my wedding ring on...
...no worries...and no one is the wiser!
ETA: i shouldnt say 'costume' because they'll tarnish...i should say cubic zirconia...not the totally cheap dress-up stuff. How tacky hahahahaha!
Also...congratulations on your engagement!