Doubts....

To add my experience to the mix, and further add to the "each doctor is different" trend:

I had two weeks of pre-op diet - liquids only. I went right to soft foods day 1 Post-Op.

I was cleared for alcohol at 3 months post-op, and have drank alcohol regularly throughout my weight-loss journey with no stalls or other ill effects (I'm a wine drinker). It affects me exactly the same as before.

I regularly drink carbonated beverages without any issues (in the form of seltzer - I was never a soda drinker).

So don't worry about hearing differing opinions. But you do have to ask yourself - do you trust your doctor? If the answer is no, then perhaps looking for another one is the best choice. You are dealing with health, here.