Conversation
When you strike up a conversation with a person who is blind, do what you normally do when talking with someone who can see. There is no need to speak louder, unless you know the person has a hearing impairment.
If you do not think they heard you in a normal tone, you may want to mention their name, for instance, “Hey Gary, did you watch the game last night?” This will likely get the person’s attention.
And yes, it is all right to use common language such as “Did you watch the game?” or “See you later…” People who are visually impaired use this kind of language all the time, and it is by no means considered odd or offensive.