If a private business asks you to leave you have to period or face trespassing charges. Yes no gun signs have been decriminalized and you can carry past them but if they ask you to leave just read my previous statement.
In the instance you see a no gun sign don't go into the business or if you have a permit just conceal carry. Make sure and leave them a nice little card on how much business they are losing by posting the gun buster sign.
always be polite and don't bring bad light on gun owners. Always be nice and if possible educate people. Even if you have to go back later and talk personally with the Pizza Hut manager when things are slow for them. We can change hearts and minds and it's worth it doing it one person at time.
Glad your carrying,