Thank you for your question! All games made with the Ren'Py game engine allow you to press "v" to activate assistive self-voicing, which will read all dialogue and menu items out loud. (So even Ren'Py games that are not tagged as blind-accessible may still be fully playable!)
You can advance dialogue by clicking or with the space bar, and choices and menu items are selected with the "enter" key. The game menu can be accessed by right clicking or pressing "esc". Menus can be navigated using the arrow keys, and "page up" and "page down" let you switch between different menus.
For Robot Daycare in particular, there is a "Press to Start" screen. I unfortunately really couldn't figure out how to make it read that out loud and it just says "New Game" instead. Either way, to start the game, press "enter", navigate down with the keyboard, and then press "enter" again.
If the voice sound effects are distracting, you can disable those by heading to the "Settings" menu, and navigating towards "Voice Volume". Then, you can select the slider using the "enter" key, drag it to the left with the arrow keys, and then confirm by pressing "enter" again.
Thank you again for bringing this to my attention, and please let me know if you run into any difficulties!