Who remembers Marine Life and down town Gulfport as it once was?

Several clues suggest this postcard dates from approximately 1962–1968:

The style of the linen/chrome postcard.
The automobiles parked in front, which appear to be early-to-mid 1960s models.
The Hotel Markham signage.
The Marine Life attraction was operating and heavily promoted during this period.
Historical context

Point Cadet was Biloxi's entertainment district before casino gaming arrived decades later. Within a short walk visitors could find:

The Marine Life attraction.
Beaches along Mississippi Sound.
Charter fishing boats.
Seafood restaurants.
Souvenir shops.
Nearby military activity from Keesler Air Force Base.

It was a favorite stop for families vacationing along the Gulf Coast.

What happened?

Hurricane Camille struck the Mississippi Gulf Coast on August 17, 1969, devastating Point Cadet and much of Biloxi. Many waterfront businesses, including the Marine Life attraction, suffered catastrophic damage. The tourism district was rebuilt over time, and today the area is occupied by parks, marinas, museums, and casino resorts rather than the family attractions seen in this postcard.

Interesting detail

The slogan "Hurry Back!" printed on the lower left was a common feature on postcards sold by local chambers of commerce during the 1950s and 1960s, encouraging repeat tourism to Mississippi's Gulf Coast.