Now the only thing I have left to do is to wait and enjoy.
この場合、次のような言い方ができます。
ーI'm all finished getting ready for my trip to France. Now the only thing I have left to do is to wait and enjoy.
「フランス旅行の準備ができたから、あとは楽しみに待つのみだ」
Now the only thing I have left to do is to wait and enjoy. で「あとは楽しみに待つのみ」と言えます。
ご参考まで!