Do you prescribe pre-operative drops prior to cataract surgery, if so which ones and why?

I do not use preoperative drops. There are no published clinical trials that have established any benefit for preoperative antibiotics or NSAIDS. The strongest evidence supports preoperative povidone-iodine drops and intracameral antibiotics such as cefuroxime or moxifloxacin. This has been validate...

The main reason I prescribe preoperative drops is so that patients get them ahead of time and can start using them right away after surgery.

No, I do not. There is minimal evidence of benefit for endophthalmitis or post-op CME (cystoid macular edema) prevention from initiating eye drops before surgery. Some practices initiate drops preoperatively to get patients in the habit of taking post-op drops.