An enthusiastic audience
: feeling or showing strong excitement about something : filled with or marked by enthusiasm
They were enthusiastic supporters of the president.
I’m not wildly enthusiastic about your latest idea.
They were less than enthusiastic. = They were far from enthusiastic.
She received an enthusiastic welcome.
— enthusiastically /ɪnˌθuːziˈæstɪkli/ adverb
They welcomed her enthusiastically.