Many fiddlers and players of other traditional music instruments’ players enjoyed sessions there. Many fiddlers and players of other traditional music instruments enjoyed sessions there.

Many fiddlers and other traditional musical instruments’ players enjoyed sessions there. Many fiddlers and other traditional musical instrument players enjoyed sessions there.

Many fiddlers and other traditional music instruments’ players enjoyehad sessions there. Many fiddlers and other traditional music instruments players had sessions there.

Many fiddlers and other traditional music instruments’ players enjoyed sessions there. Many fiddlers and other traditional instrument players enjoyed sessions there.

Many fiddlers and other traditional music instruments’ players enjoyed sessionsians played music there. Many fiddlers and other traditional musicians played music there.

If by sessions you mean they played music, I wouldn't say "enjoyed sessions". I would instead say they "played music"

I saw an Irish dancer who showedid a brush dance with a deck brush. I saw an Irish dancer who did a brush dance with a deck brush.

To "show" a dance implies that the person did not do the dance, and is only presenting it to an audience. Like, for instance, showing your friends a dance video you found on YouTube.

I saw an Irish dancer who showdanced a brush dance with a deck brush. I saw an Irish dancer who danced a brush dance with a deck brush.

I saw an Irish dancer who showdemonstrated a brush dance withusing a deck brush. I saw an Irish dancer who demonstrated a brush dance using a deck brush.

"showed" does work here, I just thought that demonstrated may work a little better.

I thought she was so cute, like Kiki, a Ghibli anime character and a witch. I thought she was so cute, like Kiki, a Ghibli anime character and a witch.

I thought she was so cute like Kiki, a Ghibli anime character, and a witch. I thought she was so cute like Kiki, a Ghibli anime character, and a witch.

I thought she was so cute, like Kiki, a Ghibli anime character and a witch. I thought she was so cute, like Kiki, a Ghibli anime character and a witch.

I thought she was so cute likeand reminded me of Kiki, a Ghibli anime character andwho is a witch. I thought she was so cute and reminded me of Kiki, a Ghibli anime character who is a witch.

I drank Guinness’s beer, which was so tasty. I drank Guinness beer, which was so tasty.

I drank Guinness’s beer, which was so tasty. I drank Guinness beer, which was so tasty.

I drank a Guinness’s beer, which was so tastygood. I drank a Guinness beer, which was good.

I drank Guinness’s beer, which was so tasty. I drank Guinness beer, which was so tasty.

I drank some Guinness’s beer, which was so tasty. I drank some Guinness beer, which was so tasty.

My experience at an Irelandish Festival My experience at an Irish Festival

My eExperience at an Ireland Festival My Experience at an Ireland Festival

"experience" is a noun, so it should be capitalized in titles.

My eExperience at an Irelandish Festival My Experience at an Irish Festival

I went to an Irelandish festival in my city to listen to Irish tunes. I went to an Irish festival in my city to listen to Irish tunes.

I went to an Irelandish festival in my city to listen to Irish tunes. I went to an Irish festival in my city to listen to Irish tunes.

I went to an Irelandish festival in my city to listen to Irish tunes. I went to an Irish festival in my city to listen to Irish tunes.

I went to an Ireland festival in my city to listen to some Irish tunes. I went to an Ireland festival in my city to listen to some Irish tunes.