Let's meet in front of your hotel at 8: 30 tomorrow morning.

Let's meet in front of your hotel tomorrow morning.

Let's meet in front of your hotel tomorrow morning.

Let's meet at your hotel at 8:30 tomorrow morning.

Let's meet next to your hotel at 8: 30 tomorrow morning.

The second feeling is a bit far-fetched, but it does not exceed the number of squares.

The most stringent standard statement (regardless of the number of spaces) should be:

We will meet in front of your hotel at 8: 30 tomorrow morning.

So if the topic ignores 8: 30, use the first method, and if you insist on emphasizing 8: 30, use the second method.

I think the topic is to examine before … rather than the usage of the phrase before 8: 30. So choose the first one.