I have two questions

[nocturne cloak]

Q1: how do I get to the Savannah?
Q2: when or how do I get an underwater home or plot?

[full dove]

A1: the way is next to Anne's house, there a big rock there, you dan destroy it with picaxe
||the bridge will appear after you complete 18 offering bundles||
A2: After you reach townrank A||, you must see the townrank A celebration cutscenes too. after some time the king will you a letter||