[X] WAFF more with Mami. Drop a comment about angels because wings. Those wings are awesome.
[X] Bring up your idea about how Mami's magic is about connections, and tandem magic between you and her possibly letting you keep all your friends' soul gems cleaned at all times.
[X] Kiss Mami on the cheek when you land. She's the best.
[X] Undertake whatever preparations are needed for the meeting, then look to practice enchantment with Mami.
[X] Talk about fixing table-chan. You could decorate it in the process. You want it to be a joint effort in some way so that it'll be something the two of you will have made together. (Ideas on our end: melt it down, recompose it)
[X] If Mami has other ideas for how to spend the time instead of that, go along with them.