G'day Brooke,

I wouldn't say so - we've had quite a few reviews on this one as well, and noise isn't an issue that anyone has seemed to raise.
I could very much depend on the mattress combo, but if you had any issues it would easily be addressed by using a fitted sheet or blanket.

G'day Matt,

Generally, the zip orientation is from the perspective of being inside the bag - so it sounds like you do have a left-hand side bag, and need a right-hand zipper bag for your second one.
Hope that helps!

G'day Collette,

One runs along the foot so you can open up the base of the bag to help with temperature control, the other one runs along one side so you can get in and out.
Wether or not you choose a left zip or a right zip bag just comes down to personal preference.

We can only really go by feedback when it comes to long term reliability of items like zippers, and by all accounts, we have not had any issues with the zippers on these bags, Joe. 

If a product has a recurring issue we generally pull it from our range as it just becomes a headache for both us and our customers.

G'day Angus,

I've just given this a whirl, and I can confirm that you can zip together two Deploy 1300s as long as one has a left zipper, and one has a right zipper.

G'day Paul,

Yep!  The Caribee Deploy 1300 Compact Sleeping Bag can be opened up like a blanket by unzipping 1 side zip, and the foot zip.  Being a tapered rectangle it wont make a squared off quilt, but it will do the trick!