Hi everyone! So I'm planning to have my wedding in Hawaii, and even though I live here, most of our guests will have to travel to the island. We're thinking of going to a Luau the day after the wedding and I'd like to make the announcement to the guests that it's an option. However, due to the nature of our budget, we aren't able to pay for the guests, and it's also really expensive (about $100/person, we have over 70 guests) so it will be like an optional thing for them to attend while they're here. How should I make the announcement on our website that we're going to a Luau, so they can reserve a spot if they want to, but also making them aware that they have to pay for it?