If you'd like to visit us another time when you're not as busy, you're more than welcomed to do so.
ご質問ありがとうございます。
この場合、お客様やゲストなどが忙しそうにしている時に、「[あとで](https://eikaiwa.dmm.com/uknow/questions/261/)来た方がいいですか？」と言いたいなら、丁寧な表現で「If you'd like to visit us another time when you're not as busy, you're more than welcomed to do so.」と言えます。
ご参考になれば幸いです。
"あとで来た方が良いですか？"
- Is it better if I come back later?
- Should I come back later?
もっと丁寧な言い方？
- Would you like me to come back later?
- Would you prefer if I came back later?
- If you would like, we could come back later?
アメリカ合衆国 
