Outdoor Masses? I’ve been to a number of these.
As a child while on trip across country trailer trip in 1965. Many larger National Parks held religious services for different groups in park amphitheaters. There was usually a large, open-front building or platform with a covered roof to prevent problems such as you describe, but people had to sit fully outdoors, bring umbrellas if in rain. In that case, my Dad would usually find a real church, if at all possible. Depending upon the state of the diocese or the priest, the Mass in 1965, might be anything from fully Latin, ad orientum, to practically novus ordo. One memory, in Grand Canyon Natnl Park, Mass was in the amphitheater. A no-nonsense priest who said Latin Mass, put up signs re: dress modestly, women cover heads. It was beastly hot, so we brought umbrellas for shade. A problem became evident from the start. The covered stage area had barn swallows nested in the ceiling beams who did not appreciate the Mass. They kept dive-bombing the priest and altar. The priest requested two men to stand guard duty on sides and keep them away. My Dad volunteered. He stood there with a broom waving it around to chase the birds. At the end the priest thanked the men, but announced that Catholics would need to drive the 40 miles to the church next Sunday.
There have been outdoor Masses on Pigrimmages, outside of locked churches where the novus ordo forbade the SSPX from using the buildings. I’ve been to a Mass in a huge tent, at a group campsite where the picnic table was used for the altar.
I’m sure the American martyrs held Mass Mass outdoors. Think of those who say Mass on battlefields or atop jeeps during wartime.
NORMALLY, Mass should be said in a Church, however. It is wrong to have Mass outdoors or in an odd place just for the novelty.