I have spent the majority of my working career so far in beer distribution. It amazes me how much bashing and banging the typical case of beer gets before it reaches the consumer...with VERY few casualties relatively speaking. Based on this, you probably don't need anything extra. Anyway...my sugestions for you are either some "6 pack carriers" or the cardboard crosses that (used to?) come in 12, 18, 20, and 24 pack bottles. I think the 6 pack carriers will work better than the latter when laid on their side.
I like the aluminum bottles when camping, but these may not be available depending on your brand of choice and location.
'04 GMC Sierra 2500HD, CCSB, D/A, MaxBrake, B&W Companion, Retrax Pro, AR Power Steps
2013 Rockwood 8289WS w/Diamond pkg
1969 Camaro RS/SS Convertible
Dad's old 1968 Empi Imp (recently recovered from under 21 years worth of boxes/dust)