I've made sure I haven't played in a two guitar band for years - it's not a lot of fun. As has already been said, very few guitarists know how to shape their tone and style to make use of having two guitars.
The only problem I encounter is the guitarist worrying - sometimes an awful lot - about how 'empty' the sound is when they solo. I've spent countless hours convincing them that it doesn't sound empty, that a rhythm guitar underneath the solo adds little to nothing, and that the cost to the sound of having two guitars chugging away all night is just too great. I don't add my worries about having two guitar egos in the band, not out loud anyway.
Previous commenters are totally right - the sound of the band fills all the space, you don't need to compensate drastically for anything. And audiences don't want to be swamped in noise anyway - they want light, shade, nuance, dynamics and a touch of wit and grace. That's much easier with one guitar than two.
You'll have a ball, good luck.