If they do it during candio phase, there shouldn't be any need to roll you. There aren't any big evolutions like there are in OC phase (RLP, PI, drill comp). As long as there are no complications with the surgery, you'll be fine.
SIQ = sick in quarters. You stay in your room, people bring your meals to you, you don't PT or drill, etc. It's usually if you need to be quarantined because you came down with something infectious, or if you need to recover from something big, but not big enough to put you in med hold (like recovering from wisdom teeth removal). Basically you'll spend a few days in bed while you're recovering.