Sure, but you have to actually fly to get those points. They don't check on what you do at the destination. You can see a client or lay around the pool for all they care.

I get Business Extra points for my small consulting business, then get day passes. I use them, myself, or give them to employees or clients. I gave one to a visually handicapped lady I met while waiting at the gate. Due to a snafu, she had a five hour wait at the gate. I called a wheelchair pusher and gave her the pass, then told the pusher to take her to the AC where she could get assistance while she spent her five hours in some comfort.