I have difficulties booking a shipping space for container vessels.
I have a hard time booking a shipping space for container vessels.
"船の予約が取れなくて苦労してる"
困っている
have difficulties (in) ~（動詞）ing 動名詞
have a hard time (in) ”
会話では前置詞inはほとんど使われません。
I have difficulties booking a shipping space for container vessels.
I have a hard time booking a shipping space for container vessels.
日本 
