Plugin breaks is_front_page() function, alternative?

Yes, it does indeed monkey around with the query (in order to “trick” The Events Calendar). What if you add something like this to your theme’s functions.php file:

function is_eventrocket_frontpage() {
	global $wp_query;
	$eventrocket_frontpage = $wp_query->get( 'eventrocket_frontpage' );
	return ( true === $eventrocket_frontpage );
}

You could then test to see if it is the frontpage using:

if ( is_eventrocket_frontpage() ) { /* Do something... */ }

Would that work?

Thank you very much Barry, it works! ??

Excellent!