For a special occasion like a wedding, anniversary, or valentine’s day you want to smell classy or Gentleman-like. For women, you would want to smell elegant, or according to the theme of your special day.
For both genders, you want a perfume that will last long on your skin so target a fragrance with moderate to high longevity. This is usually an EDP.
If you are a man, then the oil factory groups you should look for are woody or lavender.
If you opt for woody, you will come across as masculine and serious. The perfume will often have good longevity.
Think of Mont Blanc Explorer- the Mont Blanc brand is built on this.
If you go the lavender route, you come across as classy. This oil factory group is known as fougare or colloquially a barbershop fragrance, essentially you smell like shaving cream. These perfumes have good longevity.
Think Jean Paul Gautier Le Male.
For women as stated before you want a perfume that matches the theme. If you are going for a traditional type of wedding ball gown wedding think of fresh floral perfume.
A great example is Coco Mademoiselle EDP
If you are going for a beachy vibe try a citrus fragrance or if you are more bohemian you can try a more woody unique perfume.