I have a lot of experience with tubes. I've had them myself, my 8-year-old has had them twice, and my five-year-old has had them once. My five-year-old's right ear tube just fell out last week and she is already having fluid retention problems again.
To ease your concerns about the specialist, it doesn't take much of an exam to tell you that your child needs tubes. If there is a buildup of fluid in the ear, then they will say your child needs tubes. That takes seconds to 'diagnose'. There's not really much else that needs to be looked at.
That said, I would STRONGLY encourage you to wait, and not get tubes yet. Your child is way too young. Eustachian tubes are not fully developed for years. That is, they are not straight enough to effectively drain fluid on their own for quite some time. So, if you get tubes at only 1 year old, chances are, as soon as those tubes fall out, you will be looking at a second surgery to get a second set of tubes. If I had known that, I wouldn't have put my now 8-year-old through her first surgery at age 3, because she had to have them again at age 5. Now, my 5-year-old is facing the same thing.
MOST kids, if you wait, and there are no significant hearing problems, will grow out of the problem. Their Eustachian tubes will develop over time, and the fluid will drain on its own. My SIL opted to wait, and by the time my niece was six years old, she wasn't having any more problems.
If I were you, I would wait until your child is at least 5 to have the surgery, unless there is significant hearing loss.
The other option that I would STRONGLY encourage you to explore, is chiropractic care. I won't be signing my 5-year-old up for a second surgery until we have tried this option. SEVERAL people have told me that chiropractic adjustments absolutely eliminated the need for tubes. A $20 copay to see the chiropractor is a heck of a lot cheaper than paying for surgery!
Hope this helps!