Hi there,
Delete/Remove the search box
Head over to Appearance > Custom Design, and click the CSS tab. Add this to your custom CSS:
#search {
display: none;
}
Delete/Remove the 'Meta, Register, and Log in'
To remove the default widgets in the sidebar (Archives, Meta), try adding a widget to your sidebar by dragging a widget to the Primary Widget Area under Appearance > Widgets:
https://oasishookahlounge.wordpress.com/wp-admin/widgets.php
What type of widget you decide to put there is up to you. As a lounge/café, you might want to add a Contact Info widget, for example, so customers can find your contact information quickly on every page. Or you might choose a text widget, perhaps with links to your Facebook, Twitter, or other social media accounts.
Delete/Remove the 'Leave a Reply' comment box
It looks like you already figured out how to do this, but just let me know if you need further help.