だい感謝 かんしゃ さい
daikanshasaide

Noun
Da Copula

て-form: Used to connect clauses, make requests, or chain actions of 大感謝祭

1. -te form: connecting clauses; -te form: making requests; -te form: chaining actions; ; at the Great Thanksgiving Festival; during the Great Thanksgiving Festival; at/during the Big Thank You Festival

Te-Form