I'd say Sanji deserves lessons like this, but at the same time I believe he will neither learn from them nor change. He lives for cooking and ladies, after all.

At a first glance it didn't look like Luffy's initial fight will have any overly strong opponents. They are all never heard of folks, after all. But I doubt he will go all out at once, so we might see some fighting. Though with Luffy you never know. He doesn't exactly plan things too far ahead.