Yeah I guess you are right...I think I'm going to use a bakers twine instead of the raffia because I'm going to be using bakers twine for other things....I guess I just like the look of the other ones...I guess I will have to seal the bottle...what would you use? Hot glue? crazy glue? Something else?
I was also thinking of not putting our names, Just "Thank you" and "Punta Cana 2015"...I don't have our names or date on anything...is that weird? Do you think people would like our names and date on some things?
I think you could use a little bit of hot glue to secure the tops. Maybe try one first to make sure the hot glue doesn't melt the cork or anything. It should be ok though. I wouldn't even go all the way around the corks with the glue, just two tiny drops will probably do and then squeeze the cork in there as much as you can so the sand doesn't slip through.
I would put your names on the messages because I think it makes it more personalized and memorable , especially because it's a favour that the get to keep, rather than it being an edible one.
I have some little bottles, they were bigger than the ones you have, they came 5 tied together and I used as little flower vases but anyway, around the neck of the bottle they had baker's twine and it looked really nice so I think yours will look nice too!