S.J.
Hi K.,
I'm sure you'll get a lot of responses on this one. Here's mine: my little girl didn't get her first tooth until 15 1/2 months old. Then a couple of them came at once. She was delayed with all of her teeth and didn't get her eye teeth (canines) until she was almost 2 1/2. Oh well! I hear that when the teeth take longer to come in, they have healthier enamel and fair well.
FYI - my husband and his mother both got their teeth late. I know you don't have the benefit of this kind of knowledge, but my doctor said that they don't really begin to question things until the kids get to be 18 months or so. Then, they may consider x-rays. Meanwhile, hopefully your son can still "gum" a variety of soft foods.
Have a great camping trip!
S. J.