can a yeti asr5 alloy be fitted with a reverb are there any cable guides on the frame?

Yes, there are guides – on my 2012 version at least (I’ve got a Reverb on mine).

P.S. This topic’s title isn’t very descriptive…

Yes ther is 2 under the top tube. Running reverb on my 2011 frame.

Even if there aren’t, it’s simple to work round- cabletie along another cable, or use stick-on cable mounts (TBH they’re not very good but they’re just about good enough)

+1 northwind, had dropper remotes on a few bikes never had “special” guides, usually got top tube guides for other cable/hose you can just double up with or zip tie cable to cable.