Some of them do open earlier than noon, here is a list for you of the ones I could find:
Yorkshire County Fish Shop (UK)- 11:30am
Tangierine Cafe (Morocco)- 11:30am
Kringla Bakery (Norway)- 11am
Cantina de San Angel (Mexico)- 11am
Boulangerie Patisserie (France)- 11am
Sommerfest (Germany)- 11am
Yakatoria House (Japan) opens at noon
Tempura kiku (Japan) opens at noon
The Pub at Rose and Crown (UK) opens at noon
Liberty Inn (America) opens at noon
Lotus Blossom (China) is closed for rehab right now, so I don't know when it normal opens.