Beginner Gardening: Watering plants when away and blossom-end rot, 1 by MN_brown

MN_brown wrote:
I have about 18 potted outdoor plants (in 2 gallon-6 gallon pots) . I will be away for 2 days and want to make sure that my plants don't die. Most of them are vegetable/herb plants.

I have been saving empty bottled water bottles and was thinking of using them to water the plants for the 2 days. I heard you just fill them with water and invert the bottle to water the plants. Any tips of what is the best way to use them.

Also, I have 1 tomato plant that is unusually thirsty. It's a Fourth of July and it wilts by afternoon even after being watered in the morning. All the other plants have the same soil and are fine. This plant's soil is all dry while the others are still wet. I think it has also developed blossom end rot. Any tips on how best to water it would also be appreciated.