You must take advantage of the opportunity.
You had better avail yourself of this opportunity.
Don't let this opportunity slip away.
I must not let slip this opportunity―miss this opportunity.
Don't let such a good opportunity go by.
Don't let this opportunity go by.
この好機を逃すな。
The bottom line is that we mustn't lose this opportunity.
Such opportunities do not occur every day.
Take care not to throw away this chance.
Those opportunities are very rare.
Such opportunities do not occur every day.
If I miss this opportunity, I probably won't have any chances to go there from now on.
You should make use of this chance.
If I let this chance pass me by, I probably won't go there from now on.
This chance won't come around twice.
This is a golden opportunity, so do not miss out.
All you have to do is take advantage of this rare opportunity.
Such an opportunity will never occur again.
I appreciate this opportunity.