Yes, hospitality is when they either bring food for the visiting speaker, have them and their family over for a meal, or take them out to eat.
I've seen plenty of speakers take advantage of this, however... Instead of bringing just themselves and their immediate family, I have seen speakers bring other members of their congregation as well...and those who sign up for hospitality are expected to pay/provide for these, too! I experienced this firsthand when an elder in our congregation had an outgoing talk. His wife invited my ex and I along to spend the day with them. I didn't know that the congregation would be providing hospitality for this brother and his wife because the brother never said so. When the couple hosting saw that it was four people and not the expected two, they were visibly nervous. We went out to a restaurant and I felt like I was imposing. I ordered something small and we tried to pay for ourselves, but the couple we were with would have none of it...they said it was part of "hospitality". I didn't feel right about it then, and I still don't. I felt like it was a terrible imposition to expect these people to pay twice what they originally thought.
Then there are those who sign up to provide hospitality and then take the cheap way out and just give the speaker a small food item. I've seen a bookstudy group sign up for it, and all they did was pool their money and buy the guy a cake to take home with him. It was almost as if they were saying "Here...take your cake and screw".
The whole idea behind being hospitable is enjoying someone's company over a meal or even just coffee. It's about getting to know someone, welcoming them, thanking them, etc. It's not an excuse for the ones being hosted to bring every Tom, Dick, or Harry with them and expect them to be paid for as well, and it's also not right for the family hosting to just give them a gift card or a fruit basket and send them on their merry way.
