PHP - menší počet dotazov na 1 stránku

$vratz = mysqli_query($pripoj,"SELECT meno, priezvisko FROM objednavky WHERE skupina='$cisloskupiny' AND pismeno = 'A' ORDER by priezvisko");
while($vratz2 = mysqli_fetch_array($vratz)){

$pismeno_A .='<tr> 
    <td>'.$vratz2['meno'] '.$vratz2['priezvisko']</td>
        </tr>';
}

$vrat_zoznam = "";

$vratz = mysqli_query($pripoj,"SELECT id, pismeno, priezvisko FROM objednavky WHERE skupina='$cisloskupiny' ORDER BY pismeno, priezvisko");

while($vratz2 = mysqli_fetch_array($vratz))
{

  if ($vratz2['pismeno'] != $vrat_zoznam)
  {

$vrat_zoznam = $vratz2['pismeno'];

$test .= '

<table class="tg2" style="float:left;">
<tr> 
    <td class="zakaznik">'.$vrat_zoznam.'</td>
</tr>';

  }

$test .= '

<tr> 
    <td class="zakaznik">'.$vratz2['priezvisko'].'</td>
</tr>

';

}

<?php

$dotaz1 = mysqli_query($pripoj,"SELECT * FROM tabulka WHERE druh='moznost1'");
$dotaz1 = mysqli_fetch_array($dotaz1);

$dotaz2 = mysqli_query($pripoj,"SELECT * FROM tabulka WHERE druh='moznost2'");
$dotaz2 = mysqli_fetch_array($dotaz2);

$vypis->set("moznost1", $dotaz1['obsah']);
$vypis->set("moznost1", $dotaz2['obsah']);

?>