Recommendations

If you are into art, you must visit the gallery!
If you're into art, you should visit the gallery.
If you into art, you should visit the gallery.

because I said so
since it's quieter in the morning
because it's affordable
it's fine, I guess

The guided tour tends to get crowded after noon.
The guided tour is tend to get crowded after noon.
The guided tour tends get crowded after noon.

You must like the botanical garden.
You might also like the botanical garden.
You will like the botanical garden.