G.B.
I think if they know he has the plugs in they can be more hands on. If they see him doing something risky they can have someone go to him and touch his shoulder to get his attention.
It would be about the same if they had him where he can't hear them right now....the ear wax plugs should be similar to how he hears now.
After getting the tubes in he will be better, it may take time but he will hopefully be "healed".
My grandson that is 3 was found to be deaf. He didn't even respond to the bass drum being banged behind his head at the doc's office. They put tubes in and he was so freaked out! Everyone had to learn to talk quietly to him so it wouldn't startle him. He was young, maybe 8-10 months old when they did this surgery.
I think it is the best thing in the world. Our grandson that lives with us had them done. The gas they use has more of a chance of him waking up disoriented and loud but it wears off in minutes and he will be back to normal. Regular anesthesia, IV kinds, do not have similar side effects, they wake up like they have had a long nap.
I hope you have a wonderful experience with this. We did and would do it again in a heartbeat. The outcome has been remarkable.