Occasions and etiquette
Perfume for outdoor events
For outdoor events, choose according to weather, crowding and any indoor portions. Open air does not justify unlimited application or guarantee how far a fragrance will carry.
A HUME Fragrance buying guide

Read the whole itinerary
Queues, shuttles and covered seating can be much closer than the main outdoor area. Plan for those transitions too.
Keep storage sensible
Do not leave a bottle baking in a parked vehicle. Follow the maker's storage instructions while travelling to the event.
Evaluate enjoyment in context
Choose a scent you like in comparable weather. Avoid inferring sun protection or outdoor suitability from citrus or natural wording.
Try this before you buy
Map the open-air and enclosed parts of your event before choosing the fragrance and carry format.