Anniversary gift

My mom and my dad will celebrate their wedding anniversary on July, and this early, me and my sisters are thinking of what to give them. If only we have enough budget , then we would love to take them to some Bahamas vacation rentals. But for now, maybe we can settle with some first class hotels in their area. Then a dinner buffet will be great to end their night. The Bahamas vacation has been a long time dream not only for my parents but for my family as well, but I am not sure if our budget can cover all of the expenses so I am going on where our budget would lead us. Wherever it may be, i know that my parents will certainly enjoy their time together.